I've been asked to shoot an event where the head of my company is going to be giving a 20 minute lecture. They're expecting great results since I've done some good shots for the company events previously. BUT, this is very different, it's in a Lecture hall, and I'll be up close with the CEO of the company. And I think I'm getting very nervous about this. Any advice? How do you make a lecture hall look good? How do I make myself invisible to the crowd while still getting good angles?? help, please!!