This is the work of a true savant, a visionary, a man who spits in the face of conformity and says, SCREW YOU, I'LL MAKE MY VAN LOOK LIKE SHIT JUST TO SPITE YOU.
Ok. I am a dumbass and I measured that last wall section incorrectly. See the wall isn't a perfect square, it arches upward unexpectedly and I didn't take that into account when I cut the wood. Perhaps I will re-do it when I get another 4x8' piece of plywood, or just make some trim to cover it up. Who cares, it's about the adventure, not the van. Either way, I am like 90% done paneling.