Feedback for my sprites.

[Kelvin]

The ball is shaded pretty nice, but the total depth shading on the bull guy with no overhead lighting makes him look flat. It's just a straight line, so the depth shading doesn't really work for him, since a technique like that is used to, as the name implies, show depth by having the background darker, but since it doesn't follow any contour, it doesn't work. The ball guy uses both directional and depth shading, so try to apply what you did with him to the bull.