Write an article based on this "Practice your presentation in front of friends and family members. Tape record yourself. Be warm."
Don't be shy -- ask for constructive criticism. This helps you know whether or not you're meeting the time requirements and if not, how you could tweak your style. And once you've recited it 20 times before breakfast, your nervous should be at a minimum. If you can grab a friend who you think has a similar knowledge level to your audience, all the better. They'll help you see what points are foggier to minds with less expertise on the topic. Alright, so this one is a little much, but if you're really nervous, you may find listening to yourself beneficial. You can see which parts you're nervous about and which parts you have nailed down. It'll help you to see the flow, too, when you listen back. It'll also help you with volume. Some people get rather timid when in the spotlight. You may not be aware that you're not loud enough! You are allowed to be a person, not just a machine that relays facts. Welcome in your audience and take a few seconds to establish a comfortable atmosphere. Do the same with your conclusion. Thank everyone for their time and open the floor for any questions, if allowed.