Keep in mind, though, that the actual hitbox of a player character is only 48 fracunits (pixels, essentially) high and 32 fracunits in diameter, so you don't want your sprite to fill up the entire 70x70 image.
Stop asking about Shadow :V
I don't get why you guys are so picky about bad content being made on the forum. I mean I know I make bad content, but at least I'm trying something different, and give these guys a break, no one other than their friends knows how well they did, so just give him the criticism he/she needs and move on.
However, towards the last picture, I think you need to work on it a bit, i think that thing is missing the beak it needs...