Have been trying to lay down a greytone pass first before doing color on an overlying multiply layer. Feels a bit too airbrushed. Need to find a simpler method that doesn't require a gang of colors, layers, and time to convey light and shadow.
Some sketches and rough 1st/2nd passes before hitting the above. His arm in the right sketch needs to be bent more at the wrist if he's placing some of his weight on it:
(I like the top left drawing, and the middle bottom expression.)
(This one felt a bit more finalized. Would treat this as the panels before the above colored strip.)