Nothing is wrong with the circles guess you're just a bit blind
ONTOPIC: The left eyebrow kinda bothers me a bit but it's fine since he's a 'mad' surgeon, the bottom center teeth is kinda small while the upper center teeth is just fine.
7.9/10
Looking fine for a first wip, well I don't really know about realistic head but.
I like that eye.
Looking forward for the completed versoin though, keep it up.