Measuring Relative Sizes
It's important to keep measuring relative sizes of things as your drawing proceeds. In this view of the Capitol in Washington, D.C., that I dug out of one of my old sketchbooks, I had made a couple of notes to myself regarding dimensions.
The dome should be “more squat”; the width X should be about half again as wide as height Y. I simply used the pencil-and-thumb method described in Part One to compare various distances.
I find that I have somewhat more need to check up on myself when I'm drawing rounded objects than when drawing rectangular things. The curves throw me off. By the way, the little inset at the upper left reminded me that I was viewing the Capitol through a break in some tree foliage. When I later painted ...