Whoa, his eyes
Egh... no. Everything looks wiggly and wobbly, and the anatomy looks off. I know you're obviously going for an SD here, but SD doesn't mean 'random body parts spewing out from wherever.' Textures are pretty cool, I guess, but when I look at the whole thing it looks off-beat and fuzzy. Whatever, onto my real complaint:
Drawing Mario in a realistic/creepy style is really, really, really, really, really, really old. Not funny anymore, and DEFINITELY not requiring any creativity anymore.