Not personally a big fan of black outlines, but I suppose its tolerable.
Most of the issues I see are on the right (his left) side of the sprite. What immediately stands out to me is the flat bottom edge of his vest, it feels like it should be angled a bit upwards instead of laying flat. Also, if you remove that one pixel on the bottom right corner of his pants, the cuff will feel smoother. Maybe its just me, but the back of the foot on that side looks odd, more like an animal foot.
On the left side (his right), the outline on the bottom of the vest and leg cuff could use some cleanup work. Its also odd that he only has 2 toes, perhaps its just a side effect of the angled perspective of his foot? I can't help but feel there is an issue with his heel on this foot too. Lastly, his chest feels off center and that cluster of pixels around his crotch area is distracting.
A quick edit came to mind;
I gotta figure out how to slow down the .gif settings in PS, sorry about that lol
