1. Look straight at the camera
2. Don't move around too much.
3. Try to avoid "um", "like" and "so".
4. Practice before you record.
5. Learn to be concise and simple.
6. Be direct about what you say. Also by kind.
7. Make it fun! Give an example, analogy, metaphor, or something similar.
8. Smile, have fun, and be creative!