Dr. Jeff Cornwall has a great post about how to pitch, which matters not only to entrepreneurs trying to get funding, but to anyone who ever needs to persuade someone of something in a short time... in other words... all of us .
Short Version:
- Present a clear case of the problem and the solution.
- Present with passion.
- Work on your delivery.
- Know the audience.
- Practice, Practice, Practice.
I would add a #0: front-load credibility. Make your second and third sentences be quick examples of ACTIONS/RESULTS you have taken to make the venture go from a concept towards success.