More characters took shape...
...and more.I next worked out the umbrellas, which I wanted to design carefully in relation to the figures.
I developed the tree on a separate layer of tracing paper, so as to facilitate later placement, and eliminate excessive erasing and re-drawing of the figures. Many artists work with layers in this manner on the computer, rather than on paper, as I do. The concept, activity, and purpose is the same, no matter what the medium.
Finally---the layers are combined, and the detailed sketch is ready for execution!