I did several tests for the pickguard. A friend of mine has access to a laser cutter and a cnc machine.
The pickguard on the left is the three ply pg. It was cut out with the cnc machine.
The pickguard in the middle is acrylic mirror, and it was cut with a laser. The flame was engraved on the backside of the mirror. Making it semi transparent.
The pickguard on the right is three ply birch wood, and it was cut out with a laser. The flame is literally burnt away form the top layer of the veneer.
The one on the left made it to the final pg. But I had to work on the flame a bit