Man, If I had a nickle for every time this question has been asked. Including the time's I have asked it
- Get as many games as you can. There is no substitute for experience.
- Stick with it. Even veterans miss a call from time to time.
- Listen. Listen to the people that have been there before and even peers.
- Share. Share your experience with others (especialy situations you think you handled poorly) and get suggestions on how to handle it in the future.
- Get as many games as you can. oh said that one already
Hang in there guys.