Ok I like this Girl (Help girls and Guys)?

Ok i like this girl (obviously)WE make eye contact in the halls usually.I see her sometimes touch her hair and one time she randomly went into her bag.Last Friday i was making hand gestures to my friends and making my friends laugh.I dont talk to this girl but i saw her looking at me at the main entrance that day.This week is midterm week and i saw her looking at me walking past me.When i looked up she was looking at me .What does this mean?If she likes me what can i do not to go up and talk 2 her randomly