1. Practice (the other commenter has great insights) 2. Switch on a laptop camera and record yourself during practice. Watch where you are uncomfortable. Practice again and watch. Continue 9-10 or even more times. 3. Get a good night sleep before each presentation day. This is important. 4. Anticipate and prepare answers for potential questions. Ask a family member to listen to your presentation and ask questions that they can think of. Practice giving them a proper answer. Wish you luck.