Beginning Watercolor Homework : A Hard Edge is a Hard Edge, but a Soft Edge Asks, "How Soft?"
This sketch was mostly made on dry paper. The edges of the poplars, the shadows and the ridges
are all hard, Only a few strokes within the mountain shape and the sky are soft. The cloud edges are very soft, which makes a lively juxtaposition.
In this similar study the sky is very soft, again, using the same hard/soft contrast as the previous scene. Here, though, the edges of the trees are soft; not as soft as the clouds, you can see that the trees don't feather out as much. The trees' edges are softer than the dark rocks, but harder than the clouds. Softness is relative.