Editing some sprites

Just editing some sprites for alternative use. Just started Zoro, just wondering if I did him right in the white shirt:
Update#1:

Does anyone else think he lacks muscle?
I might try and change the stance to him holding 2 swords or 1 sword.
btw credit to heatpack for Zoro and I think Grim for JUS zoro.

yes, a guy lifting 5 tons in each hand for training should have bigger muscles in his hands

I tried throwing in some muscle:

Partly on the left arm and a bit on the chest.

the chest is ok, too much boob looking, more like a fat guy then zoro
the ypper arm will be good IF but the lower arm is bigger...
but overall it's very cool

edit:
actually you should make the upper arm a little thiner, and also make the lower arm a little bigger, that what i think at least