nose is pretty good, only that it has that blank line, which ruins everything, also I keep thinking the eyes are way too high and too close to each other, and.... his left eye ( HIS left eye ) is a bit odd.

Yeah, you will understand idea of eye when I will finish head
Also, what blank line?

typo, not blank, black, and I don't mean the distorted eye, I mean the normal one is bad shaded

Nice, Shadows is good.. and Looks Detail..
Btw, you want make realistic human head?
Its looks realistic yea.. Goodluck for make it btw..

Its realistic style and I am working on shadows now.
I am going to do human monster

The nose is good.
Try to make the head in this style, with more realistic shadding.
Make this shadding in the eye and will look a lot better.
Also, post a ingame pic.

i like it. make it... gore ;d
eyes arent to close, and they arent too high...

Bump
New Wip added
Trying to make creative mouth.
Need advise :>

what is this on the right side?
its missing of the lips ;d
also the teeth should be more blurry... the dont feet with the rest...

What is the thing in the right side?
Try to remove the out blacklines on the teeths.
Don't look realistic, look the outlines: