First off, move in, but don't move in too quickly. You don't want to come off a suddenly creepy, but simultaneously you don't want to be standoffish. The worst thing most guys do is think that the "anime style" standoffish style makes you cool, whereas the opposite (being cool, confident, and out there) is much more powerful.

What you wanna do first is boost your own self-image. Don't change yourself fundamentally, but try to be the best person you can be- wellcultured.com is a good place to learn a lot of this kind of stuff. Improve your dress, improve your body, get some experience conversing and doing other things- just try to refine yourself. If you make small changes, she may be pleasantly surprised.

When you're boosted up so far as you can, try to do something definitive with her. Ask her out on a date- have a time, place, and idea, don't just waffle. Don't just do a fucking boring dinner-and-a-movie thing- ask her out on a date to an aquarium or a play or something- something cultured. Be confident. Make it clear. You may not have a car- if you don't, get a buddy to take you there and don't complain about it.

Never overextend your welcome, EVER. This is one of the biggest flaws guys have in situations like this. In and out with a bang. Don't just casually waffle around her, be strong.

Again, improve yourself before anything else. I keep saying this because it works in a very direct way- better yourself, better your chances. Work hard, play hard, and good luck.