Let me give you a few simple rules for learning to draw. First, see of what shape the whole thing is. Next, put in the line that marks the movement of the whole. Don't have more than one movement in a figure; you can't patch parts together. Simple lines; then simple values. Establish the fact of the whole. Is it square, oblong, cube, or what is it?
W.M. Hunt's Talks about Art: With a Letter from J.E. Millais (ed. 1878)