According to the The Harvard Management Communication Letter , personal presence is a powerful tool. Once most people find a way to harness their's, they gain a better sense of self and command greater respect. If you find yourself in front of an audience large or small, the first step to gaining greater presence is to take a deep breath and exhale slowly.
Breathing helps to calm nerves.
Next, take a moment to observe your audience. Most people think they have to start speaking immediately, but silence is a powerful tool you should use to your advantage. When adrenaline surges most people relieve their stress by moving around. Try to remain still, focusing the energy instead to your voice and a few well-chosen physical gestures. Don't be afraid to make eye contact with members of your audience, holding your gaze for a few seconds at a time.