The mount consists of two parts (bracket and camera arm) that are plugged together. They usually hold together through friction, but I suggest glueing them together.
The camera holder bracket webcam is attached to the X-end stop cover with the screws on the left and bottom side (see picture). The existing screws are long enough.
It's made for cheap chinese cameras you can find for around 6-7 euros. I got mine from aliexpress. The inner diameter for the circle plug is 10mm.
The arm is optimised so that the camera has the view you can see in the picture.
Don't forget to rotate the camera in klipper :)
The author remixed this model.
I adapted the arm by trimming it a bit and adding a ball for the camera to mount to.