As far as apparel, I don't care what shirt they wear or if it's cut up, it means nothing to me and I wouldn't even take it into consideration. I do like when they wear pants though, I like to see them slide.
Come on time and hustle from the time you step on the field until the time you get in your car. The girls who hustle always stick out in my mind, give 100% the entire time. Nothing worse than girls who are lazy or argue with you.
Don't goof off in the lines, pay attention and do whatever is asked of you. Do NOT look at your parents after every move and NEVER roll your eyes!!
Parents - ASK as may questions as you can about the team, organization, coaches, and other parents. DO NOT spend the entire tryout telling everyone how great your dd is and giving them the low down on her stats. Chat, watch and absorb!!
Spartansd - I have to say, I like when the parents come and ask me questions, I always tell parents to ask questions. If they can't approach you at tryouts, that sends out a red flag that you aren't willing to answer questions and may be unapproachable during the season. They want to make an educated decision and if they aren't permitted to approach or talk to you at tryouts when do they get the info?