The best way to prepare for public speaking is to just wing it.
Get up there and do a lot of distracting hand motions and yell a lot.
Wear glitter, again, it helps distract people from what you are saying.
Also, it is good to picture yourself naked, and taking a huge dump on the people in the front row.
That will help take your mind off of the angry hoards that are out there mentally mocking you, wishing you would just shut up so that they could leave and go home and take a shower from how dirty they feel after having had to sit in the same large room as you exist for mere minutes.
Also, know that most people just nod and look around, their minds a near total blank. They think of what they are going to do that night, they think about the people around them - the back of the head of the person in front of them.
If all else fails, single out someone from the crowd and ask pointed questions - this always helps lighten the load off of your shoulders by dumping off the pressure onto that poor slob.
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