How to submit artworks?

I think @lorunox is right - the pupil placement is a bit off. Also, the lack of highlight on the eyeball is throwing me. Our eyes are very wet and reflective. Not seeing a specular highlight makes the eye seem dead... unless that's what you're going for. Otherwise, I'm diggin' it. Nice job.

I think the pupil is a bit off center, but otherwise it's great. I think you just looked at it for too long

I like the drappery/texture of the shirt, it looks real and cool. The perspective on the hand and right part of the face feels off to me... https://media.istockphoto.com/photos/closeup-side-profile-of-man-looking-down-picture-id483297190 i think that right part of the frontal part of the skull shouldnt be showing or its something about the eyesockets not wraping around the "head sphere"... i cant pin point exactly what it is. Maybe this could help you to search the angle you want and see if it is accurate: https://sketchfab.com/3d-models/low-poly-female-head-dadf7c8157b14a378c7911c0edf0857e You dont have to download/buy the model, just rotate it in your browser (i use firefox).

Nice!