How do I ask out this girl?

just ask her dude. you will regret it. girls dont like it when guys get shy or nervous. so just be confident in yourself and go for it if you do that she will most likely say yes. going by what you said there im pretty sure she likes you. dont think about what could go wrong think about wat could go right else you will regret it. say somehting like i really like you lets go to the movies etc