3 top clips and one corner one. The 3 top clips you can work your way one by one pushing the tab in from the mirror glass side and pulling back. Two people help to make the process easier. That bottom inside corner clip I didn’t figure out. I broke mine on the painted cover. Auto body double side mount tape solved that.
So....there is a picture at least and kind of a process. If you figure out how to get the last clip out without breaking it please post it up. There is zero info out there on 15+ edge mirror cover removal.