Girls are scarey and I am one. We are funny creatures but if you remain confident not arrogant you should do fine. Find something fun to talk about a few interesting subjects, see which ones make her smile. At that point you know you have gotten her attention. Don't beat a dead horse to death, keep it light and fun. If this girl you approach acts like a drag just tell yourself that she has the problem not you and if you keep this frame of mind while you are fishing the enormous sea of females you will find a bite and possibly lead to a fulfilling relationship. Best wishes!!!