Remember which color armband you have on. And try to remember it's the members of the other team you are suppose to eliminate. Never forget your peripheral vision. If you're not defending the flag or waiting in ambush, never stay in the same place too long,k or all you've done is pick your grave site. Let your teammates know where you are.
Friends are nice to have.
Friendly fire is not. If you freeze in place, he'll most likely not see you until he's so close that you can't miss. I mean, be careful it doesn't stick out from behind cover. It's by far everyone's favorite target. On the first game of the day, be a bit more careful before entering a hut.