I think the feetless legs look weird. Even if it might make sense if you think about it, I think it would look better with feet so that it's not distracting.
The heads look wider than they are tall and flat from the side, like ET's head rather than a human head.
The torso looks like a flat ribbon. Give the character a butt and a chest! Those parts of the torso are thicker than the waist. In addition, the neck would look better pushed back a pixel, as it lines up with the spine (or rather, it includes the spine!).
Adding thighs might also help you define the legs in a more natural way, giving you room to hint at knees and the natural bend of the leg.
Here are some base sprites I made in a similar style a few years back, along with their silhouettes, perhaps they might be of use: