"looks really blocky"

epends what you mean by blocky. If you mean the cat looks like a brick with 4 legs,a head,and a tail,then that's intentional. If you mean "You don't anti-alias": then I didn't know about this unwritten rule(sorry...) If you mean "Even though you try to correct it I see signs it was a 40x25 image at first",that's because I can't work with big images directly-I have to start small then scale them up.Sorry.
"not really innovative":I honestly can't figure out what you mean by "innovative",but I'm guessing it's the flat colours you're referring to,or lack of shadow.
"can't distinguish the head from the body": Well,I can't figure out how to split the head and the body without changing the colours or the view angle. Probably should have changed the view angle.
Note that the bottom-right cat is simply a identification mark to take up space.
...I should probably stick to user interface images in future.