I elaborate on these in my longer entry, but:
If you're going to lean against the wall, be sure not to turn the lights off, at least, not during a competition. During awards, everyone just screams and acts silly.
If you're going to be part of a figures team and are all lined up ready to go, next, do remember to remove your flannel dance pants.
If you're going to fall and are little enough to go for cute, rub your bum, glance at the crowded audience, and comment, "Owwwww."