Speak of the dks, and the dks will appear...

Rhonda (Wren) has it right.
That photo of the Red Riding Hood figure has high-contrast black-to-white areas (metal, shiny leather, and hair whose shine verges on the metallic), but note that the skin is mostly light values, as Rhonda said, with subtle transitions and dark shadows only in very limited areas.
My versions of the Ghoul Queen (03126) and "Black Pearl" the evil mermaid (03078) also used desaturated skin tones, using Aged Bone as a base color. To get the effect in your first inspiration photo, I think your midtone might be even higher, like Polished Bone. For shadows, I would just add more and more Brown Liner and perhaps a bit of Woodstain Brown (or any cool brown) so the mix doesn't go too gray in the middle values. I often find it difficult to get smooth blends with grays, since the paint changes color when it dries. Anyway, if you can get your grayscale highlights and shadows looking the way you want them, you can glaze a little more warmth or color (maybe a slight pink) if you want. It looks to me like the Red Riding Hood has some blue in the shadows of her skin.
Also, remember that Reaper has the "Power Palette" application. If you can get the image under 300kb, then you can use Power Palette to click around and get approximate Master Series colors.
Where is that Red Riding Hood figure from, anyway?
Derek