I've been looking at it and..may the force be with you on this one!!!
You have a lot going on in this piece. I don't have the skill to help on light sources.
Question. Is metal/iron/steel also an element for this guy?
If not, you could try out how it looks if you strip away the shoulder pads and replace them by stone armour.
Kinda the same as you did with his underpants.