The first steps in this piece are not shown. I used square cross section wire and used a file to make notches and bends where the corners are. Then I could solder the corners without having to line then up. Only one join needed lining up. I also soldered a 16 ga ring on the bottom of the bezel cup to allow for more soldering area . It gave me a place to put the edge of the frame. notice the chunk of pad holding up the frame while I solder it in possiton.
Holding it in a 3rd hand tool resting on the solder pad to steady the position. (white paper for photo only, obviously, you can't have paper on the solder bench)