This is a nice circular molding that might be used as a frame.  It prints well in the provided .12mm layer setting, but you can adjust to the level of detail you want.  Resizing should work well to a point.  Just be careful about going too thin.

You can find my full collection of decorative moldings here:  [https://makerworld.com/en/collections/2994504-decorative-moldings](https://makerworld.com/en/collections/2994504-decorative-moldings)