Of course I can't just keep a storyboard in my head. As my old boss used to say, "It ain't real until it's written down."
Above are the first 6 panels of my storyboard for StopMo Jam 3. Well, for 15 seconds of screen time that's just about all of them (but I don't want to give the gag away). And looking over them now, I see that some modifications are already forming in my mind. But the basic story structure and shot types are unchanged. And that's how it should be. If my ideas change too much, it may mean scrapping this approach and starting over.
But that's part of why a storyboard exists. It forces you to think more concretely about your ideas and just how they will work together. Or not. It's far easier to change things on paper than with puppets, sets, etc., or after the scene is already shot and in the digital "can".
My next step was to import the panels into my video editor and shoehorn them into a 15 second timeline. So far so good. It looks like it will be comprehendable even at this quick pace. I might even have a few frames to spare.