I think that this is amazingly done. Overall I adore the outfit. I think that the colors fit the character amazingly well. Not to mention it is this kinda sexy, but tomboyish outfit in a way. Her eyes are very well done. I love the coloring and the white in them. The band around her head is very well done and very cute ^^. Now the hair. I'm very impressed with the hair in this one. It is very well done and the highlights bring it to life.
So Overall I love this piece of work. I think you did an amazing job.