I have made copper cuff rings before and have never been satisfied. They always came out too big and not exactly the shape I was looking for:
Where was I? Carefully measuring, I believe. So there I was carefully measuring and marking my measurements carefully, see?
There is more filing to be done but before I do that, I think I'm going to cut a quarter of an inch or so off it. Because all that careful measuring would get me the right sized ring if I were leaving it like this but I'm not. The things I plan to do with this piece of metal will warp and stretch it.
80's romance girl would probably wear a big, acrylic ring with stripes.