Custom streamdeck 8 key

First of all: I soldered this whole thing, I recommend you to do it as well.
Use the Arduino ProMicro ATMega32U4 type-C board.
I have made the program for it, it's using the F13-F20 keys so it won't mess up anything. It's downloadable as a .txt file.
M3x 16mm SHCS screws were used (that's what I found at home at the time)
Follow the wiring drawing and edit the program to your liking.
Building steps:
1. Put the switches in the “Keyframe”
2. Solder the grounds together, and that 1 more additional which will connect to the board (on the drawing: black lines)
3. Solder the board connecting wire on every switch (on the drawing: red and blue lines)
4. Solder the ground wire onto the board
5. Solder the connecting wires on the board in the order you like the most (I made a suggestion! I did it this way, because it's later reorganizable on the software side)
6. Slide the “Keyframe” into the "Body upper" from the bottom (watch for orientation)
7. Put the mainboard in the “Body lower” part
8. Put the "Body lower" part on the assebly (watch for orientation)
9. Secure it with 4 M3 x 16mm screws, mentioned below
10. Put on the Keycaps of your choosing (mine have pictograms)