Achieving distance with hue.

Softening the shadow colors with liighter shades of cools puts more detail into your imagination, but tends to push it all back away from the yellow underpainting that still dominates the lower third of the canvas...Really bringing that into the area just in front of the viewer. The darker shadow section on the left was roughed in with a mixture of Alizerine Crimson & Ultramarine Blue and it too stays well forward visually, of the other lighter and cooler hues.