In addition to the previously stated obvious lips:

Above the eyes beneath the eyebrows and the crevice of the outside sides of the nostrils(left side, but the right side is camouflaged in darkness) are very artificial and the nostril crevices are particularly even and “sculptorly”(yeah, it’s a word!).

The eye placement and/or rotations are off/out of sync. Looking at the grey matte pics it seems I’m correct. They also seem to be duplicates, judging by the vessel formations and clump of browness near the pupil’s bottom side.

The middle hairline along the top of the head has a very clean look, very little texturing/sculpting. I assume it didn’t get as much attention as the face for fair reasons, of course, but in context of the end result the contrast becomes jarring.

The left ear feels like it should have more of a pinkish hue/subsurface scattering glow since the light is hitting it hard. Although looking at it again, I might be overestimating it and the angle looks a bit further from a direct hit.

Anyway, this is mostly nitpicking and I probably wouldn’t catch much if I didn’t know to look for it. Really great work.