While the drawing is pretty good I have to agree with Yo-yoyoyo, there's something a bit off about his face and the beard. I didn't think it was a girl, but a really young guy - and while he may grow a manly beard it wouldn't be that long at such young age. I also think it's related to the smoothness of his skin.
I'm saying this only to try and help you, but when I first saw the face I thought it was a picture or a girl with a beard.... The top part of the head looks very feminine, I think it's the very smooth skin.