I agree, very tidy! Kudos.

Do you need a bit of insulation between the edge of the board and enclosure? If the board can move at all it's fairly easy to short the traces.

And I feel your decal pain after the struggle I had with the last one. I did look into making silk screens, but was disappointed when I learned that the process permanently sets a screen to one design (or one layer of one design). Great if I wanted to crank out 20 identical pedals, less great for my experimental 1-off designs.