I have stitched the shingles for the front slope of my casket. Here they are pinned to a piece of foam core over a drawing of the 3 top panels for the casket.
Then I started some color studies in Photoshop.
Originally I had started working from the top layer back and I kept changing my mind about what I liked. Now I am working in the other direction, background, room interior, window frame and finally dormer.