Shades of grey

This kind of drawing is so different from painting and watercolor and sculpture because you slowly build tone, instead of just being able to slap on a layer at full value. It reminds me of blending crayons in elementary school, actually. The more time you take and the lighter you press with every layer, the smoother it turns out. Today I finally took my time patiently blending in the eagle's wings, but now it looks like I've got another case of the slows.