just act natural, be yourself and make her laugh, give her compliments and say it like you mean it. Then in a few days ask her if she want to go for a drink sometime and see what happens
Here is my advise, one don't think about marrying her until you have dated her for a good amount of times or for a year or two depending. I think that people jump into marriage sometimes then regret it later on, because right now she seems amazing to you but you don't know how she really is because you haven't dated her yet. Either way i would date her and get to know her before you jump into marriage 😛 and also just be yourself man, don't try to be anyone but you if she doesn't like you the way you are then you're talking to the wrong girl 🙂