Here are rough cut parts.
Here is the base inserted for a test fit.
Here it is glued together. Hopefully, you can see that the cut out for the hotshoe goes through the base some. This is to stabalize the front of the holder when on camera.
Here you can see the foot that slides in to the hotshoe. Later I shaped the sides of the foot with a hot screwdriver so that it would slide in easier.
As you can see in this photo, the rear panel is slightly angled to have slight pressure for holding the phone in. Granted this is at the cost of loosing some of the screen. Although I would rather be safe.
The project has turned out well. I am considering making a new version out of aluminum plate in the future so that I could mount an iPad and use Photo Soft Box Pro. But that is a whole new project. As it stands this is only useful for tripod work and I would never suggest using this for handheld shots. I hope that if you make one that you send me a photo, especially if you make improvements!