Very, very, VERY interesting work!
I love where this is going, keep it up.
I would give you some constructive criticism but right now your preview pictures are too vague.
Is it pixel art? It seems that way from my point of view.
If I were you I'd vector it in 512x512.
One small point, the front looks pretty damn rad but the rear looks unfinished on all parts.
Would be way better if you'd "stop" the shape like you did on the front, instead of cutting it off like the rear. The rear of the torso is not appealing neither.