When you’re doing caricatures of famous people, you’ll find some are difficult to draw. You’re always looking for some distinguishing feature to make the likeness pop. This is especially true when you’re trying to write a joke that hinges on the likeness. If no one knows who it is you’re drawing, the joke fails.
Then sometimes you want to draw someone who should be easy to draw because they possess many of those distinguishing features, but for some reason, you just can’t get it right. It’s inexplicable.
This was NOT the case with late Marty Feldman. I seriously could probably draw the guy blindfolded. This was my first attempt and, BOOM! Done! I might draw him for everything now.