Really cool volumes on the face. The limited dithering is spot on

Sparse eyebrows is a common facial feature, especially for people with light, sparse or thin (opposite of thick) hair. In many lighting conditions, the hair of eyebrows are are not dense enough to block light significantly, so at a distance, you can see the skin of the brow ridge, barely darkened.

This has great anatomy and I love the detail, but the lack of shading on the hat, and the lack of eyebrows makes it look off.