Well. Theres not much to critique, its EPIC. The only things that would put someone off in search for perfection would be the slightly angled up and oversized elbow plate and maybe the head / shoulders ratio in perspective and depth as generally Space Marine torso's are wider and allow their shoulder pads to seeminly flow down. As seen in Ultramarines the movie, or Space Marine the game.
Spot on details and effects. I love it. 9/10 because it is not finished xD