Son has freshman tryouts in a couple of weeks. His travel team I think has taught him well, they sprint out to positions, always carry on with a sense of urgency, respect the team/coaches/teammates sort of thing.
I reminded him yesterday, to not wear his travel team jersey, or even a jersey style shirt he has from texas baseball ranch. He wasn't told to wear anything with name/number(as far as I know), so he'll likely just wear something light fitting, probably just some baseball themed shirt. Only hat he has is the summer team hat, which is from a town about 20 miles away, so nobody will know, though it does slightly resemble a local team.
The big one for him is body language, which for the reasons Jett describes, worries me. He also has trouble sometimes looking people in the eye, which makes me go insane sometimes. He'll be looking around when the coach is talking, and he's listening, but the perception is bad. So, some things to work on.
Thanks for the list and subsequent posts, always a helpful reminder!