some more notes:

-practice in the outfits you want to wear onstage...might be more essential for women..who practice in track suits and then wear tight and/or skimpy clothes on stage.  I had this wicked shirt that I wore once...not really realizing that everytime I hopped around a little I was showing more than I wanted to   no one seemed to mind though....(except for me!)

-wear comfortable (yet stylish) shoes

-be gracious.  If the crowd gives you applause and cheers and praise - thank them.

-act like you know exactly what you're doing

-don't fight with your band members

-don't make excuses for poor quality..like saying "uh..we've never done this song before, so it may sound like crap"...just play it and own it.

how you act when you're on your break is important too.  I think it's great to talk to people from the audience if possible...(they might buy you drinks !  ) be approachable, be yourself