find an activity to sort of "cuddle" or sit close. make your move by sort of kissing her forehead or something. if she likes it, move to making out and take it from there

touch her a lot and make eye contacts, by touching i mean touch her hand or shoulder and when she's rubbing her hair, fixing shirt/dress thats the sign she likes you, tease her a lot and when she dosent expect kiss her in lips

give a good hot kiss, take her to bed and after that every thing will go automatically.