It's totally fine to feel nervous, but you don't have to act that way. The more confident you act, the more confident you will feel. This doesn't mean that you need to act arrogant. Try to calm yourself and remind yourself that what you're doing isn't unusual. Rather, it's necessary, interesting, and ordinary.  Remind yourself that your audience likely can't see your nerves.  Take a deep breath and exhale before you go on stage. Smile, raise your eyebrows, and otherwise tell your story through feelings as well as facts. Show your audience your own passion for the topic. Say everything as if you find it interesting and expect them to be interested by it as well. Your enthusiasm will be infectious. The more directly you address your audience, the more engaged they will feel. Be relaxed and conversational. Rather than rattling off your points, deliver them to the audience as if you are certain they will be interesting. Look directly into the faces of the people you are addressing. If there are too many people to really see faces, just look boldly into the crowd. . Stand up straight and face the audience completely. Keep your head up and your shoulders back and relaxed. Don't twist any part of your body (shoulders, hips) away from the audience. Move your hands as you speak. Don't wave them, as this will make you look nervous. Instead, try calmly gesturing with your palm out when you make a point. If you describe a shape, draw it in the air with your hands.
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