One afternoon, late last year, I spent some small amount of time considering how to make a spaceship that resembled a severed head. I made a little sketch of an actual head to start me off, and went from there.
Two doodles later I thought to myself, "Hmmm, this isn't working, let's check out the script for more inspiration."
Upon rereading the scene, I found that writer Greg Meldrum didn't want me to make a spaceship that looked like a severed head, he wanted me to have an actual severed head floating about in space. Which is bizarrely easier to draw. Who would have guessed.