Practice, practice, practice. That's the only way to figure out what will work for you. BTW, a lot of girls say they don't wear makeup but they really do. It's just a less is more approach. Ideally, you want people to think you're not wearing makeup when you really are. Also, you don't need to go overboard. Just try some foundation, lip gloss, maybe little blush, and some eyeliner + mascara. Pretty simple really. I could do my makeup in a couple minutes. Girls who spend hours in the bathroom are just primping for fun.
You hair is really quite pretty. I wouldn't change it if I were you other then growing it a bit longer.