Mod Podge didn’t work for what I needed, which was adding some rough texture as well as a solid seal to the surface of the board. Dap and then WOOD PUTTY were much more effective. In the end I went with wood putty.
You can also see some of the earliest COLOR TESTS, trying to find the right BASE COAT for the boards and starting the search for the perfect — and LIMITED — mix of highlight/dry-brush colors…