How to make the field hockey team?

Okay, we'll I really want to play on my high school field hockey team but I've never played before. I'm in grade 10 and the team is for 9s and 10s. I've never played ice hockey, only ball hockey and if it doesn't sound too conceited, I'd say I was pretty good. I recently quit my soccer team of 4 years and high level competitive dance of 11 years. I try to stay fit by cycling and working out at Goodlife Fitness but I'm a really slow runner because of my asthma. I've been googling how to play field hockey and I have a good idea of how to play as far as mental skills go. I have all of the equipment I'll need except for a stick which will be supplied. Also one of the coaches is my last years gym teacher and she gave me an 86% out of 100% in her class so I guess I do pretty well in gym.

What should I do to make the team? There are a lot of girls trying out, does it sound like I have a pretty good chance? Thanks! :)