Looking great mate, maybe add a little bit of detail in the hair, just to give it some depth if you get my drift. But that's probably just me. Other than that, it is a very well drawn head and I would give it around an 8-9/10. Keep it up.
It's not bad, but, imo, the color choice could be a bit better...
Also, these big eyebrows are really distracting me O.o
Other than that, I sorta like it.
7/10