It's quite awful.
Let me follow that up so you don't think I'm an awful person:
The lines are incredibly straight; there is no shading whatsoever; the hair is green, and, likewise, completely unshaded; the head is shaped like a smushed marshmallow; the facial features are completely spaced without thought of any kind where they ought to go; and his walk suggests that he's merely shortening his legs (they don't look like they're bending, what with no shaded knees and all) and bending his arms.
I highly suggest looking at several tutorials for spriting, and perhaps, instead of immediately trying to make your own, using an RTP sprite as a base so you can see the general shape of a good sprite and how shading then gives the sprite dimension.
