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I'd soften/lighten the darker areas of the neck it looks like gout.
I like it. Well done. Were you looking in a mirror or using a photo? Just curious.
That's an intense gaze. The flesh tones all look very good. I'm seeing the top of your left ear rendered in higher resolution than all the rest. Can that be softened a little? Actually, it could be the photograph, ignore me. Nice work.