I like what Kneat said.
The advantage of starting with pencil drafting is visualization. My community-college introduction to CAD not many years ago emphasized this. CAD gives you the views for free, but the pencil doesn't. Some exercise to challenge and encourage orthographic visualization...
Thanks MadMango and JNieman.
Yes, I have a plan view of an irregularly-shaped flat-bottomed pocket without draft.
Wondering about creating a broken-out section around the feature (i.e. using a spline and showing hatch lines). Somewhere in the back of my mind I feel that I shouldn't dimension...