“I am not a talented draftsman; my initial sketches are always completely embarrassing, but I know I’ll have time to fix things later. Right now the concept is important – finding the right canvas size, colours, and composition. I’ll have time to fix the “god-awful” anatomy later on.”
http://www.3dtotal.com/team/Tutorials_3/makingof_summon_infinity/summon_01.php