Personally, I liked the colored lips better, without them he looks a bit like he was molded out of army man plastic. That might be helped by some hue shifts or some sort of background to better place what he is. He looks like some sort of merman or something to me. Ooh, or maybe a djinn. ^_^ The expression you're getting from the eyes does not match the lower part of the face. With the eyes I'm getting serous, or frowning, and I think I'd like him with a grumpy frown. If you'd rather keep the smile, I'd move some of the lines around on the forehead to indicate that if he had eyebrows, they'd be in a higher, happy position. His ear seems oddly attached to his head, like ear canal goes down his neck instead of inside his head. Take a look at your own ear, and how it really connects to your head. I think it'd help if the curve away from the head was lower down and less drastic.