Decent design. Not realistic to use with the glass door closed as there is too much glare. Also, the are area for the go pro nut needs to be larger by just a bit. It didn't fit the nut that came with the go pro. I ended up just trimming the inside of that by hand to get it to fit. Overall it works, but I will probably end up mounting it somewhere else.
I printed this using PC-PETG and unfortunately it's too flexible for it to stay on reliably, when there is a camera hanging off it. The model may need a lip on it so that it better engages with the screen.