In response to the feedback I got for approving this image:
Shimei's torso is short because the body is contracting around the core, rendering the stomach short. This should produce stomach folds in a heavier person, but in a lean one it is reasonable to expect the gut to remain flat. The spine would curve in a C, especially if pushed forward into the direction of the viewer.
From the looks of the shadow, the right foot is intended to be closer to the viewer, a product of basic foreshortening. The left leg is further back as evidenced by the shadow being further away from the viewer. This is not abnormal at all.
And to note a smaller aspect, both Shimei and Hakufu are leaned forward, rendering their neck position so that it would appear to have disappeared. This is mechanically normal for both, as one is in a place to press down on the other subject to point both heads out toward the viewer from the neck, hiding it.
The lack of sophisticated shading and other elements to denote these physical traits does not disqualify the image for quality. In my view it demonstrates most of the normal traits of normal art of its type, including a use of depth and basic proportion. Small improvements in the linework and shadow would have helped clean it up, but I don't think it is necessarily a weak image.
From the looks of the shadow, the right foot is intended to be closer to the viewer, a product of basic foreshortening. The left leg is further back as evidenced by the shadow being further away from the viewer. This is not abnormal at all.
Of course this is abnormal. Just look at the height of the knees and how the thighs are connected to the torso. Both go away the exact same angle and and the height is the same. There is no way that the feet would then look this much bigger than the other one. The shadow is too simplistic here to be a valid reason. Also, there is simply no indication that the blue-haired girl is leaning forward. Of course you can assume it. But the shading is done so poorly for her, that her body does not show any signs of leaning forward. The other girl is done much better in this regard.