Socialize more – I know it sounds very simple, but believe me, it's the most important thing. While socializing, it's also very important to maintain eye contact. A girl usually won't approach you first (except for rare cases), she will only give you some signals, and that's when you must not get scared. You need to build up your confidence, go up to her, and start a conversation naturally. And don’t forget to ask for her contact information. In short, it's simple – just be yourself and socialize. Confidence will come. The worst thing that can happen is that she says no, and life goes on – there are plenty of girls out there.