I do appreciate the amount of hatching done on the armor to give it some texture. I can't help but think this piece would EASILY be elevated with some more color shading. This kind of work begs for depth as the arm holding his head up, while detailed, is not clear from a glance that it is even there. What that means is, its hard to see the arm, especially for anyone who doesnt already know what the armor is supposed to be like. That could quickly be fixed with some shading. I'm assuming the red sun is the light source, work around that. I can see your already had some of the red glow on his armor on the left side, but take it further. I hope you do consider adding some more contrast to your future works because I can see real skill here being missed by a lot of viewers over something I believe you can easily pick up on. Keep going!