Getting ready for first year of high school volleyball...?

I'm going to be a freshman next year and i started getting ready for volleyball a little while ago. I'm really pushing myself to make varsity this year and i need to know exactly what to do to make it. i play setter mostly but i dont get taken out when i play any hitting positions either. i'm 5' 7''... umm... also i live in northeast Ohio (very snowy...) so i cant really go outside to practice until end of march and my basement doesnt really have a high celing. not really sure what else to say... im a girl. oh! and plz try not to tell me to "do my best" and "just have fun!" i just wanna kno how to be better then i already am. thanks! =)