It looks blurry, is it resized?
Or, if this is the original size, this isn't pixel art. Non-pixel art pieces should be in the
2D & 3D section.
Try drawing the knight leaning forward more, so that their weight is on the stomping foot. I also recommend moving the foreground arm to behind the knight, to emphasise the forward motion, and to give them a more interesting silhouette.
The far leg appears to be lower/closer to the viewer than the thing the knight is stomping on xP
The knight's knees appear to be too low down. Knees are approximately in the middle of the leg.