Start with a crude joke . Ones that make people wince are especially effective. Comic relief has its moments, and you do want your audience to remember you. The goal is to make everyone else feel ignorant, since you obviously know what you're talking about, and anybody else who can't is obviously thick. Again, you want people to recognize your genius, since that's why they asked you to present in the first place.
Content is everything .
Your style and appearance really don't matter, since everyone will be riveted by your every word. They'll never even notice you're wearing tennis shoes with your suit. Don't be enthusiastic . Speaking in a droning monotone forces your audience to pay more attention. Never include graphics in your slides .