Hello Mankin - my 2 cents.
You need to add more contrast between the skin color. I suggest to use a darker tone for the face details (nose, lips etc) or even try with white skin tone (of course you'll have to change the color of the white-haired courts).
I like this design a lot. It's similar to a style I've used a lot, in the past (Evil Deck uses the same logic) - the only thing is not working at all, in my humble opinion, is the skin color
Have a great day