[Billfred]

Alright, it seems that the show has been nailed down (remember, lots of pictures!).

As for actually presenting it, here's my tips...

If you're using a powerpoint, try to get a hold of a laptop (or another monitor) that you can see. That way, you'll be able to read the screen while facing them, not with your head cocked towards the screen.

On the subject of speaking, make as many eye contacts as possible--and don't talk into the laptop or the screen or the ceiling. And don't mumble.

Since they're presumably loaded, don't cheap out on looking good. Shave with a fresh blade (you can always put it back as the next-blade-in-line and keep using your current one), press your shirt as close to showtime as you can (so you've got less time to screw up), and avoid eating anything that can make a mess.

And, just to keep things safe, dress in semi-layers. Wear a dress shirt with a jacket tie. There's no way they're going to be more dressed, and if they are more casual, then you can discreetly slip off the jacket or tie (or both).

I hope this helps!