And don't make slides too complex with zazzz animations and what not... Audience is more interested in what you say than what you show (unless your presentation is about it).

If it is not too late, use an ice-breaker - something to calm yourself down in front of the audience. Maybe a sentence or two about your personal expereince / passion about the time you spent preparing for the presentation.. etc.. maybe a joke or a punchline.. My opener usually goes like this: Do you know why the new service pack of Windows (or whatever) has been delayed yet again? ... They haven't done putting in all the bugs... Works for me because I make presentations to mostly Windows competittors.

_x