I ended this one just with rendering.
but, let's see a bit more of these steps
We obviously need to set un some base colors
over those color, we can work with lights and shadows more or less as we do in a miniature. A bit flatter this time as we'll set some lights that are going to do part of the work during render.
Also, the scenery needs some work. I did some easy NMM reflects to fit in my background.
Also, I added some extra details like a gun in the leg to explain a bit more the position of the arm.
So that how she looks like