If you're a funny guy like me, when she makes a mistake or whatever just comment on it and make it sound funny but not insulting. Just start small talk with her or something. And don't wear old ass clothes or baggy ass shit. Wear presentable clothes. Like skinny jeans, vans, nikes, medium sized shirts, etc. Make sure your hair looks right cuz girls are picky with hair. They love feeling on my mini fro :busta:
Just be cool and start small talk and eventually you guys will get closer and friendlier and once you get her number, you're pretty much set from there. Don't fuck up.