After drilling all the mounting holes, I took the panel to the bandsaw to rough-cut the overall circular shape.
I needed to clean up the rough cut, so I used a Jasper circle jig on my router to do that. I went outdoors because of all the sawdust that would be generated.
I wanted to dress-up the cut edge, and considered roundovers vs. chamfers. I decided on a simple chamfer and used a router table to do that (mostly decorative) work...
After that, I spent a little "quality time" with sandpaper, and then wiped on a coat of a sealing varnish. It's getting close to being done, but it's going to take a few more coats of finish. At least I can see what it will look like when finished.