I finished the piercing today.
I am going to sand it while its still flat. In this photo I am sanding what will be the inside of the piece. I don't think I will use the palm sander to sand the outside cause even with fine grit sand paper it sometimes leaves little squiggly scratches that are hard to get off and I don't like the way they look. The final finish on the piece will probably be 400 grit sandpaper.
I need to decide on a patina. Maybe a light liver of sulfur patina. That's kind of boring, but I don't know of anything else that I like.