You'll notice the armor on his back is very very dark and dull. The shield will eventually be placed on his back, so all of that area will be in shadow.
If you're wondering what's going on with the dots, they are guide marks for the border pattern I'm creating. I began with a thin line along the bottom edge. I then marked the height of the pattern on a stick and used that to place marks so the spacing on the top line will be even. There's a lot more to the pattern, so it will take some time to finish. My plan is to use the pattern from the nose guard of the Coppergate helmet (which this figure's helmet is based on) and adapt that to create the pattern for the tunic. I'll also be using the design work on the helmet as inspiration for the shield design.