When giving signals, pretend you are on TV even if you aren't. It will slow you down and force you to give big, clear signals. Go ahead and announce them as if you are on TV - it will again slow you down and make you think about it.
Solve problems on the field - does no good to solve them in the locker room after the game.
Make sure your zipper is zipped.
Welcome to the white hat club - reserved for the smartest and best looking football officials.