Fix the blurring on his teeth. And the over all low quality of his jaw area. And it should be less cut-out-with-scissors looking on his ears.
they are all pretty much the same slowpoke, slowbro, and slowking the only difference is slowbro has a shelder on his tail, and slowking has a shelder on his head.
they have contests to make real pokemanz like these at worth1000, and I've never seen any slowpokes, so you should enter the next one.