It’s good start. I have some critiques though...

There's a strange indentation in the jaw line, by the ear, that doesn't look quite right. Also, there's a surprising amount of slope in the side view from the chin to where the neck is joined. Fat people and older folks have that. It doesn't seem to match the rest of the head.

The mesh should be “retopologized” to a less dense, quad-based approach if you intend to build a figure.

 

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