Public Speaking, Acting, & Creative Writing
Unlock Your Voice. Elevate Your Performance.
Expert Coaching in Public Speaking, Critical Thinking & Communication
Personalized coaching for professionals, performers, students, and creatives worldwide.
Do you want to speak with confidence, think more clearly, communicate complex ideas, perform with authenticity, or write with impact? My coaching gives you practical tools to improve both how you think and how you communicate.
In addition, my approach combines public speaking, critical thinking, sequencing, keyword improvisation, pronunciation, performance techniques, and creative communication. As a result, you learn to speak naturally and clearly without depending on memorized scripts.
Consistently ranked among the top 10% of English tutors on Preply since 2025.
📌 Book a Free Consultation
About Me
David Cassel
I’m David Cassel, an actor, director, teacher, and communication coach with more than 30 years of experience in film, television, theatre, and education.
I work with professionals, performers, writers, and students who want to communicate with greater clarity, confidence, and presence.
A Practical Approach to Communication
Good communication starts before you speak. First, you need to understand your idea. Next, you need to organize it. Finally, you need to guide the listener through it clearly.
Therefore, my coaching focuses on more than vocabulary or presentation technique. We work on critical thinking, sequencing, sentence structure, improvisation, pronunciation, and performance.
Instead of memorizing formulas, you learn how ideas are built and how listeners process information. This gives you the freedom to communicate independently and respond effectively in real time.
Training Built Around You
Every student has different goals. For that reason, the coaching is adapted to your experience, profession, challenges, and communication style.
Whether you are preparing for a presentation, interview, meeting, performance, debate, or difficult conversation, we focus on the skills you actually need.
✅ One-on-one and group coaching available
✅ In-person coaching in Berlin and online worldwide
✅ Customized training for professionals, students, actors, writers, and creatives
✅ 10-, 20-, and 50-class packages available at discounted rates
Coaching & Training Programs
🚀 For Professionals, Students & Creatives — in Berlin & Worldwide
My coaching goes beyond English fluency and traditional public speaking. I use techniques drawn from theatre, directing, improvisation, critical thinking, and communication training to help people organize their thoughts, speak spontaneously, and communicate complex ideas with clarity and confidence.
🎤 Public Speaking & Presentation Coaching – Overcome stage fright, develop presence, structure your ideas, and deliver speeches, presentations, pitches, and interviews with confidence.
🧠 Critical Thinking & Communication – Learn to question assumptions, distinguish evidence from opinion, identify the central issue, and build clear, logical arguments before you speak.
🔗 Sequencing & Structured Thinking – Develop the ability to organize ideas in a logical sequence so that your listener can easily follow your thinking from one point to the next.
🔑 Keyword Improvisation – Learn to speak naturally without memorizing a script. Using carefully selected keywords as anchors, you develop ideas spontaneously while maintaining structure, direction, and purpose.
⚡ Improvised Speaking – Strengthen your ability to think and respond in real time during meetings, interviews, discussions, debates, and unexpected situations.
🗣️ English Communication & Pronunciation – Improve fluency, articulation, pronunciation, sentence construction, and natural spoken English while learning to communicate ideas rather than simply produce correct language.
⚖️ Public Speaking, Argument & Debate – Develop persuasive arguments, examine opposing positions, defend your reasoning, and respond intelligently under pressure.
🎭 Acting & Performance Training – Use acting, scene work, monologues, improvisation, emotional intention, and performance techniques to develop presence, authenticity, and connection with an audience.
✍️ Creative Writing & Storytelling – Develop narrative structure, storytelling skills, character, perspective, and your individual voice.
Think Clearly. Structure Your Ideas. Speak Freely.
The objective is not to memorize the “right” words, but to understand what you want to say, organize your thinking, and develop the confidence and flexibility to communicate it in your own words.
Who is This For?
Are you looking to…?
✔ Speak with greater confidence in meetings, interviews, presentations, or public events?
✔ Organize your thoughts clearly and communicate complex ideas more effectively?
✔ Improve your critical thinking, argumentation, and ability to respond under pressure?
✔ Learn to speak spontaneously using sequencing, keywords, and improvisation techniques?
✔ Strengthen your English fluency, pronunciation, articulation, and natural speech?
✔ Develop acting, performance, storytelling, or presentation skills?
💡 Whether you’re a business professional, executive, student, actor, writer, or creative, I’ll help you develop the tools to think clearly, speak confidently, and communicate with purpose — in Berlin or anywhere in the world.
What My Clients Say
💬After only having had a few classes with David, I can already say that compared to other tutors, his diligence and focus on first principles clearly set him apart. Highly recommended! – Jonathan, Financial Consultant, Sweden
⭐⭐⭐⭐⭐
💬David is an outstanding English teacher. He is incredibly patient and always takes the time to explain things in a way that truly makes sense. What I appreciate most is that he never makes you feel bad about making mistakes — instead, he turns them into learning moments. Thanks to his support, I have become much more confident in expressing myself in English. I would highly recommend him to anyone looking to improve their language skills.
– Claudia, Novelist and Writer, Germany ⭐⭐⭐⭐⭐
💬David erkennt individuellen Verbesserungsbedarf sehr genau und arbeitet zielgerichtet daran. Dabei nutzt er eine gute Mischung aus Übungen zur Verbesserung der Aussprache und Übungen zur Verbesserung der Grammatik und der Rhetorik. Empfehlenswert. – Patrick, German Pension Fund Legal Consultant and Lecturer, Germany ⭐⭐⭐⭐⭐
💬”Das Lernen mit David ist super abwechslungsreich und spannend. Durch seine Fähigkeit die Bereiche zu identifizieren, wo seine Hilfe erforderlich ist, habe ich bisher große Fortschritte machen können. Er vermittelt Sprache leicht und verständlich, achtet dabei aber auch darauf, dass das Gelernte in der passenden Art und Weise angewendet wird. Mit David ist es nicht nur ein Lernen der Grammatik und Vokabeln. Es ist ein allumfassender Sprachkurs, bei dem auch die Art und Weise gelehrt wird, wie man sich bestmöglich mit Sprache ausdrücken kann.” – Melanie, Pharma Chemist and Conference Speaker, Germany ⭐⭐⭐⭐⭐
💬”David est très impliqué. Il nous fait des programmes personnalisés. Il est patient. Il préfère faire étape par étape pour que tout soit parfait au lieu de faire 10 à la fois, mais mal. Quand il parle, c’est très compréhensible, c’est pour ça que j’aime beaucoup David comme professeur et je le recommande totalement” – Douglas, Airline Piolt, France ⭐⭐⭐⭐⭐
💬”David is a great teacher for public speaking! He improved not just my script and delivery itself, but also my confidence. 5/5!” ⭐⭐⭐⭐⭐ – Takako, 15 year old Public Speaker, Japan
💬”I subscribed David for the second time. I like taking classes with David. The way he explains and elaborates is very straightforward, and mesmerizing too!” – Rami, TV Producer, Saudi Arabia⭐⭐⭐⭐⭐
💬 “David is an incredible tutor who genuinely cares about his students’ success. His teaching methods are effective, and he goes the extra mile to ensure understanding.” – Victoria, Entrepreneur, Ukraine ⭐⭐⭐⭐⭐
💬 “Working with David these last 12 months has been a great experience. He is a very creative and engaging English tutor. His methods are helping me to develop confidence and fluency, also to overcome some bad habits that I had developed, and pronunciation problems. Highly recommended. – Maju, University Lecturer, Canada/Peru ⭐⭐⭐⭐⭐
💬 “David is an outstanding tutor. He always takes a personalised approach. He gently encourages you to push your limits. Davis is kind, intelligent, and polite. He makes every lesson comfortable and engaging. His teaching style is unique; language is not just communication for him, it is a reflection of your personality and self-expression. I’m very grateful for everything I’ve learnt from him!– Gleb, Computer Programmer, Russia/Netherlands ⭐⭐⭐⭐⭐
💬 “David has helped me a lot in starting a new position as a Consultant and overcoming my fear of speaking English in public or leading meetings. My pronunciation has improved significantly since we started classes.” – Fatima, Social Media Merketing Specialist, Mexico ⭐⭐⭐⭐⭐
💬 “The training I did with David allowed me to start strong in a critical executive session. His attention to detail, articulation, and emotive quality is second to none.” – Emad, Global Governmental AI Consultant UAE ⭐⭐⭐⭐⭐
💬 “Lessons with David are full of positive energy. He not only teaches proper speaking techniques but also how to engage and capture an audience. These lessons are like English and acting classes combined!” – Konrad, Germany ⭐⭐⭐⭐⭐
💬 “I am so grateful to David for his knowledge and all the practices we have been doing together. Every lesson was personalized and based on my goals. Now I communicate more confidently in work presentations, personal conversations, and video recordings. I highly recommend David!” – Daryna, Real Estate Influencer, UAE/Ukraine ⭐⭐⭐⭐⭐
💬 “David is an amazing teacher! He makes learning engaging and adapts to my needs. Time flies in his lessons, and I look forward to each session.” – Mac, Poland ⭐⭐⭐⭐⭐
Let’s Work Together
📍 Based in Berlin? Let’s Meet. Worldwide? Let’s Connect.
I offer in-person coaching in Berlin and virtual training worldwide.
📌 Book a Free Consultation]