I didn't take any pictures of actually gluing the at-this-point cut tolex to the rest of the frame, because I needed to glue it all down pretty quickly after spraying, but I think these pictures give a pretty good idea of how I cut everything to make it fit. What I ended up with was a fully covered frame with seams at the corners on the sides and top, as well as along the inside bottom edge. Some of it turned out a little sloppy. Most of it is fine. Where the wood peeks through a bit, I just painted it to the approximate colour of the tolex, and you can't really tell without very close inspection. I assume this will need to be redone properly at some point, but it should look fine for a good long while.