You don’t have to be giving a keynote presentation or even be a professional speaker to benefit from the advice in this great post. My only quibble? Not being nervous about a big presentation isn’t just douchey, it’s a clear sign that you’re a sociopath.
http://thenextweb.com/lifehacks/2012/05/13/how-to-give-a-great-keynote/
BulletProof Presentations 