Its uh..
uh..
blue do you zoom in when you render?
i recommend using a polygonal lasso at around 800%-1400% depending on quality.. and learn how to defringe [Layer>Matting>defringe]
around 2 px when you see a white outline..
your rendering right now is kinda blocky, and your hair needs work
but good try man [;
lol i think he just got this from a diffrent site :/