What’s the last thing you’ve drawn that made you pause?

Just finished a set of cross-sections for a neurology textbook — standard stuff, really. But halfway through the third one, I stopped and stared at the way the gray matter curled like smoke in the ventricles. Not because it was technically perfect, but because it looked… alive. Like it could breathe. I don’t know what that means. Just wondering if anyone else has had that moment — not with a masterpiece, but with something so mundane it almost shouldn’t matter.