Update: added shading and color–

Here are the WIP snapshots –
grayscale shading pass:

Flat colors with skin blush effects, which I do separately from the skin color and shadow layers

Flat colors + grayscale shading (no light effects yet):

Flat colors with lighting only and no shadows:

All layers combined:

I was aiming for as realistic a body shape as I can with this one.
Using reference photos reminds me how much smaller all the muscles actually are in real life.
Lines:

