hair is always a pain in the ass.
for now i'd say it's done enough, but if you find your self bored at time, just throw on one or two highlights/shadows until it feels more complete.
* needs a background
* the kerning on your name is messed.
You have some issues with your head. If you look at your jaw line into your ears it goes to the front but if you go above your ears to your hair they two areas don't line up. I understand they may be slightly different but right now I think its a little bit too much. Also you may want to add some shadowing to it which may fix it, I'm not sure to be honest.