This was VERY experimental and one of the most time consuming things I've done so far. One of those things you start doing months ago and every so often go back to do a bit more. I was really happy with the initial line art, not sure I pulled off the coloring on this, though. I tried to get the MJOLNIR armor as precise as possible, so hopefully I did it at least some justice. Hope you like it!
Master Chief and Cortana - Halo 4 Fan Art