This looks amazing. The high contrast trick is really great for bringing foreground elements into focus (necromancer, crystals) and dimming out everything else - really loving how the skeletons are just silhouettes. The necromancer himself is vibrant and detailed, though as has already been pointed out the right arm is too long. I also wonder what would have happened with a bit more contrast - I notice the darkest shade of gray you use is still rather pale.