I just completed my first two pedal builds of the Crown Jewel and the Echo Royal and I think they sound fantastic. I also decided to create a design for each of them and do an etch. When I saw the "Crown Jewel vs 10 Famous Pedals" video, I couldn't help but think of a squid (10 tentacles) so it made it onto the front.
The build process was mostly uneventful and the finishing gave me the most headache. I think the toner transfer was the hardest part and I decided to etch the backs of each pedal (even though they are attached to my pedal board and nobody will see it) since it provided good practice for my etching technique before I did the top of the pedal. As you can see in the pictures, it shows fingerprints pretty badly but they look great on my board and sound even better.