Follow this general path and you'll get in her pants.

When you're making out with her, kiss her lightly not harsh and all tongue. Give her a few pecks on the lips in between making out, bit her bottom lip a little but, just gently not really hard. Kiss down her cheek to her ear and kiss gently on her earlobe, just below her ear and down her neck to her collar bone. SLOWLY slide your hand over her stomach, drag your finger tips lightly up her torso to her tits, cup them gently, give her nipples a little attention, ect. do everything not too hard and slowly. and now i'm too lazy to finish writing this hahha lol, but just move down from there. give attention to parts of her that you wouldn't expect to, kiss and touch her everywhere not just tits, vag, lips. The hotter she gets before hand the more wrapped around your finger she'll be.