@greenwithenby → 2/2
and I reduce also the opacity of this wireframe. Then I start painting the silhouette (with help of layers) and I paint the model in shadows (only global illumination, 'sky dome' light). Then I start adding keylight to the center of interest; here the face. That gives me a direction to apply same light direction to all object on the scene. I try to keep a clean split per object and not 'model' gradients.
That's all my step and discipline so far to 'block' the scene. 🙂