I would suggest adding some shading in there, personally I think it's abit dark as it is, a slightly lighter skin color would do the trick for me.
I also think adding some details in there would help improving the piece in general! (scars, wrinkles and such)
aand, the red lines in the eyes looks very unnatural to me
I also think adding some details in there would help improving the piece in general! (scars, wrinkles and such)
aand, the red lines in the eyes looks very unnatural to me