I'll agree with FD on his stance if what to know. I would also add - be Coachable. Understand that you don't know everything(yet) and if you work hard at what the coaches are emphasizing you will succeed in the long run.
FD - I agree - effort is a huge key. GO game speed all the time. There are plenty of down times for you to rest. You get thousands of reps in practice for the 2-3 attempts on a game. If you have taught your muscles to o a certain speed thats what they will do in a game.
I'll think of more but these plus FD's are a great start!!