I was just thinking... if one were to sit on this bench, one's arse would awfully fall out through the back end due to the lack of wooden planks going across the horizontal section of the rear of the seating level. And since the lightsource looks like it's coming from the left, perhaps this would benefit from a few highlights. Also, maybe I'm just picky but on either side on the thin bits between the two sections of the bench, I reckon that could do with some anti-aliasing, because it really sticks out to me.
Want to give some dough back to all those amazing pixel artists? Donations provide prize money for contests, help cover hosting costs and support new initiatives.
Anyway I think you have to refine the outlines, and antialiase a bit