I'm trying to understand here.
are you going for a realism feel in your drawing? Is it intentional to have the eye color in a out of the ordinary (ex. green, blue, brown, etc..) color? just curious.
well anyways I feel that the hair seems like it has the rough texture of something like hay, maybe smoothing it out would be more realistic? give it a try.
The ear at first glance seems to be a bit to awkward and eye catching for some reason. maybe in the way that it is positioned/ angled or perhaps sized?
Ears tend to be a difficult thing to capture realistically, there are planes seen that can be difficult to draw.
long term suggestion:
keep practicing shadowing. maybe on a smaller scale?
I think maybe your taking on to many things on at once.
seriously go get a 18 X 24 white sketch pad and jumbo stick charcoal and start drawing hands, feet,mother, father, sister/brother, and so on and so forth.
If you really want to go in depth into drawing anatomy and figuring out the planes of the body
(jaw, nose, eyelid area, inner ears, etc..) it will help in the long run. believe me.
good luck