I like your art style.
Additionally, to what was mentioned before, I think the right arm is too long if it is behind the torso. I would erase the sleeve pixels of the right shoulder if the arm is behind the torso and shift the whole arm by one or two pixels to the right and maybe try moving the arm a few pixel up.
Now, it looks like the arm is growing.
The arm in front of the torso looks fine to me.
PS: I refer to "right" from my view, so I hope i did not confuse you