How to I become a better setter?

I'm 5'2 95 pounds and im going into 8th grade. I haven't had any club eperience but im going to start this year. I've played for 3 years on varsity for 2 and i need to get my setting down. I want to be part of the attacking on a court but I'll never be tall enough to play outside hitter(even though that's what i'm best at.) What should I do? I want to be the best, but i need practice, but my parents won't let me. I need to train hard this summer, but how?