Anet-A8 Raspberry Pi and 4 channels relay board case

My goal is to upgrade my Anet A8 3D-printer by adding a power supply control via the Octoprint interface.
Nevertheless, I also want to be able to start "manually" my 3D-printer, meaning not using the web interface but just pressing a button.
You can find the instructable here:
https://www.instructables.com/id/4CH-Relay-board-Controlled-With-Push-Buttons/

I've designed this case to mount the RPI 3B+ and the 4 channels relay board.