Dry-fit of the structure, backdrop, base, and truss assemblies, checking alignment and the sizing of the marble tile.

The backdrop is gesso over 1/4" plywood. I glued on the door and window frames, then stained them with dye and gel. I neglected to seal the finishes on the plywood when I did the frames, so the water-soluble dye bled through the gesso, giving it a realistic "aged" look after a couple of coats diluted and spread it a bit. In the end, the gesso was just slightly dingy looking up-close (it wasn't fully painted here, so the stained frames are still covered with blue tape).