This is from a how-to book I did (without Susan!) for Grosset and Dunlap in '96 called DRAW YOUR OWN SUPERHEROES NOW! It is still available from selected rare-book dealers for $1.50 and up.
I thought some kids might have trouble with some of the more realistic figures in the book, and that it would be good to give them some easy stuff to draw as well. I invented the egg-people when I was about 8.