Effective Oral Presentations
After numerous presentations that I have given in my life, I still get nervous. The way PWOnline explained nervousness is the exact way to do it. KNOWING THE MATERIALS IS THE MOST IMPORTANT THING! I have given presentations when I didn't know the material as well as I should have and I crash and burned.
One thing I try not to do during a presentation is look at the screen behind me. Your audience can't hear you and it looks terrible. It looks like you don't know the material.