I drew this today. It’s not quite what I had in mind for Cthulhu, not yet, but it’s a start. Next steps: make it even more biochaotic. And stylize it. I deliberately avoided stylizing it the first time out, so I could concentrate on the biological forms. But taking it stepwise into the abstract is probably the right next move, both on the keep-Cthulhu-from-being-just-a-[insert terrestrial lifeform] front, and on the idols-are-usually-stylized front. See the previous Cthulhu posts and their comments (one, two) for more noodlings on those ideas.
Probably I should start from here and just keep iterating on stylized chaos until I’ve taken it too far.
But hey, why should I have all the fun? Go draw (or paint or sculpt or render) Cthulhu yourself. If you leave a link to the image in a comment, or send it to me, I’ll post it. Call it crowdsourced Cthulhu. Feel free to explain your design decisions–especially if they disagree with my own. I’m happy to be confronted with new, horrible ideas!