One of the most underrated secrets of public speaking is to let your audience participate, ask questions, and allow the to become involved in the presentation.
A common misconception is that the presenter must always be talking.
A good public speaker understands that people have ideas, questions, curiosities, and a desire to be contribute. By allowing people to ask a question, even if it is a simple one, it could mean the difference between failing and succeeding in public speaking.
Other ways to improve your confidence, body language, and tone of voice, is to start managing your hormonal levels and managing your fitness. (Research shows that people have more confidence when they are in shape!)