Looks pretty solid so far.
Some stuff:
His right arm seems too short, and also lift his right pec slightly up, along with his deltoid
Add creases on the waist area; where his leg is lifted. This goes both for the cloth, such as the blue band around his waist, and the waist itself.
His left calf looks pretty weird, too bulky on the side of the foot.
His right knee also looks weird, move it a tiny bit left.
Right part of pants should be pulled back more because of gravity.
dem fingerless feet