I like what I have seen and I see you want Harsh feedback, I may have to come back on that one, this piece I favorited because it has some factors much of your work appear to be in need of, light and color, a thought separate of this is how many animals sleep with their head towards gravity. your work is amazing in many ways and I hope to see much more o it.
Harsh critique welcomed yay !! but honestly, I don't see any fatal error. The only one I can think of is light from the girl doesn't match strong light from the panda. And the fur part which near left leg look sharper than the rest. Anyway, great image