I don't visit/post at Pixelation often, but I couldn't help but notice that you are being somewhat stubborn when given critique and advice. You are concerned that people's edits change your work too much and obviously you want to keep some certain style. (Which of course everyone likes to do.) Well you've passed the first barrier of asking for or being appreciative of critique. You now need to learn to take that C+C and use it; to apply it. If your concern is that you are going to lose your own little style, you need to realise that regardless of style, sprites must still make sense and be readable, and that any pixel artist should be able to put their own style on a work while applying C+C given by other talented pixel artists who are kind enough to shed some light on how you might improve your work. Otherwise, you are wasting their time while they try to give help to someone who wants it, but doesn't really want to actually use it.

The sprite itself is not bad at all, but very minimal progress is made on each consecutive edit you make.

Is he supposed to be stepping on something? Is that why the black line has been placed at his foot?

Upper body anatomy doesn't seem bad, his arms appear too short from the elbow down or a bit fat rather than muscled/defined.
It seems that the bones of his legs attach to his pelvis at the bottom of it's 'point' rather than sitting in their sockets, which makes the legs seem too low from where they join. Again, the legs seem short from the knee down.

The shading is too highly contrasted, making the muscles seem like they are 'sewn' into him, the definition far too great in them. Not sure how to explain this, perhaps someone else could. Sherman Gill is correct though, the shading of the muscles is too detailed.

Keep working on this one, I think it has great potential.

This is .. amazing work. Handheld console standard, if not better than many games out there. Don't give up with this one.

They look as if they were on completely different angles, sort of..