For weekly challenge!
I would also suggest losing the dithering on the skin, it adds an odd (and probably unwanted) texture to it. If you really would like to add dithering, I'd go with a less regular one - it still adds texture, but a bit more organic.
Here is a small edit, I hope you don't mind:
Other than that it looks great.
the dithering is overkill IMO, but damn it looks good otherwise!