Very nice! I like how the tones you've used reflect Mannimarco's sinister motives and twisted personality. The supposed purity of the High Elves (seen in the lighter skin tones) are contrasted by the diabolical ego that Mannimarco has (seen by the darker tones surrounding his eyes and his armour); hinting his shrouded loyalties to darkness (alliance with Molag Bal).
I don't know if all that imagery was intentional, but you've managed to portray it like this to me either way and correctly captured the essence of Mannimarco that we all know about. Good job!