top and bottom

i’m in a lesbian long distance relationship and i’m a virgin. i’m going to see my girl in September and I know what’s gonna happen ;) btw i’m not like 6, i’m 17. I really like this girl, I can’t get off to masturbation at all so i’ve just never finished. I was wondering since I know i’m a top, I like being dominant. what is the bottom supposed to be doing because I feel like my goal is to pleasure her but then what do I get? please respond because I need answers and I need to know what could possibly happen in a couple months :)