How to do my hair like this? :)?

It depends if your hair is really curly in the front. If it is, then you could straighten it and then curl it. Or you could just run the straightening iron over the front pieces until they are wavy, not completely straight. The just grab the back and put it up into a messy bun. You can do those different ways. Gather up your hair and twist into a bun, secure with bobby pins. Then just try to tease out some of the hair near your scalp, and make sure that you have a nice side part or something. If your hair isn't really curly in the front then you won't have to do much to it. Hope this helped :)