I need some Lesbian sex tips?

Hi, so the girl i've liked for two years is far more experienced than i am. We've made out a couple of times and i'd like to go farther but my insecurities are keeping me from doing so. i'm not very comfortable with my body, i feel too skinny and lacking womanly curves. also i'm worried she'll detect how inexperienced i am and be turned off. so i'd like some sex tips involving ya know eating her out, fingering her, etc. what are some things that totally drive a girl crazy?