Am i good enough for my high school bball team, and how do i prepare for tryouts?

If you are going to be a point guard you will be distributing the ball, that is what you should focus on. That means you don't need to create your own shot. Sometimes you will get the ball to score, your coach should already know your abilities and make a play for you to score on a mid-range shot. I think you will make the team and have a great season.