Ok first of all, the sprite is tiny as heck. Had to use maximum zoom-in just to see it somewhat well. You can probably imagine scaling it up would be a good idea. Then the actual sprite feels like he's just flapping his legs in panic. Maybe adding an enivrement makes him look like he's actually walking, but since it's just the character in an empty void it's kinda hard for me to tell. However, I feel like adding some hand movement would help at least a little bit.