You have to get comfortable with the idea that you just might be in the center of the action. While often true, don’t worry about everyone watching you.  The fact is, they’re generally not. You’re not the subject; the thing you’re photographing is likely the thing that’s holding everyone’s attention. When you’re learning, just move in and try to have a sense of humor about it. Once you get it, it will become second nature and you’ll move because you’re motivated to capture something.