Wow, you pulled this together quickly. 2 hours for such a piece!
The way you did the hair and clothes looks really pretty, very different from what would be realistic but it works really well.
And you don't suck at lighting that much, (I assume you meant that) the neck and face are very well done. The only pointers I could give is to make the contrast bigger for the highlights; and for the hair maybe use a smaller brush, that gives it more the texture of hair with the proper lighting.
I want to print it out and put it on my wall to be honest