Same thing happens to me. Night time rolls around and little nagging doubts and feelings get magnified. On the topic of speeches, I'm in advanced communications in college right now. Honestly I don't see the point of it... its just another speech class with a tiny bit of business writing dashed in, but whatever. Its required for graduation. Anyways, our first speech is a current event presentation where all we have to do is talk about a current event for 5-10 minutes. The class is 2 hours a day, 2 times a week. For the first speech, the class was divided in two, half going one day, the other half going the second. Today was the first day, and out of 10 or so students who had to present, only 5 actually presented anything. Not only that, but the presentations were laughably bad. This is a college course, yet these people were acting like middle schoolers. This one guy gave a rushed and barely understandable speech about how food coloring affects the taste we percieve foods to have, then he played a video that said exactly the same thing he just said. It didn't add anything, because this video was his only source for information. It was a shameless attempt to pad his time. The magic key to not being nervous at speeches is to realise that no one gives a [bleep] and only a few people will actually be paying attention. Find someone in the audience who is obviously not paying any attention, and focus on them. Imagine everyone else is equally inattentive.