[j45]

Be your best self. Talk to people like you already know them (in a good way). The DJ advice mentioned here is great too. Talk with feeling. People want to hear your energy as much as your words. Talk in short sentences, they help line up the next sentence. Don't worry about memorizing your presentation line for line, but more about the major points you want to make, you can trust yourself to make those points in your good style already. If you feel like you stumble or whatever, don't worry about it, you can just pause and go into another sentence or topic.