This is pretty cool. I like the way you angled the face and put it in shadow, and the background feels appropriately SNES-y; my only criticism would be towards the banding caused by the saturated brown color that seperates the midtone and shadow on the wooden parts of his body. I think it would be better if it were slightly wider towards the center and lower parts of his torso abdomen, and either missing or used more like AA on the upper parts of his torso and abdomen (it was complex to explain but as far as its impact on the piece I think it is only minor, it is mostly really good).

Oof, my bad, It was meant to be 118 after the bg elements and gradient, I missed a digit. I'll edit that.

hi there, in image inspector this piece shows 112 colours instead of 18. 
http://yanrishatum.ru/pj/dev/?input=http%3A%2F%2Fpixeljoint.com%2Ffiles%2Ficons%2Ffull%2Fgeno.png 
there's a lot of noise apparently, maybe resaving into gif might help