I'm really trying to show this guy as a veteran and wanted to show his armor a bit worn, and battle scared. I started with the mid tone which is yellow ochre and cadmium yellow medium. From there, I blocked in the shadow which is the mid tone plus a touch of brown madder alizarin. For the deepest shadows I used brown madder alizarin with just a touch of mars black. Highlights were the mid tone with titanium white added...
For the battle scars, I just drew in the markings using mars black and then blended the highest highlight tone at the edge to give the scar some depth and "age".
I'm not sure how I'll build up the ground work, but am tinkering with a few ideas...may even try to pull off a bit of vignette. I'd like to have something very unique and different in my display this year...