Way back when (early 70s) I was talking to renowned comics writer/artist Howard Chaykin in his upstart studio about my inability to increase my work speed. He suggested that I pick up some cover assignments at Marvel because covers paid rate and a half, as well as having high visibility. Seemed like a pretty persuasive argument for digging up some cover assignments.
By coincidence, the next time I dropped by editor Carl Potts' office, he was struggling with the layout for a Defenders cover. I causally asked if he would be interested in having me take a crack at it. He had me look the script over and, sitting on his office couch, doodled out a rough for the cover above. (I wish things always worked so smoothly in the comics world.)
He had Bill Sienkievicz do the inking. I was a bit skeptical of the decision since Bill's approach is/was radically different than mine but really liked the result.
See the printed cover
Plunkett-fan Jim Harris interviewing Sandy about past and present projects.