If you have any of the floral that is in the setting "squares", I'd use that. It would enlarge the quilt, not distract from the center, and you'd be finished! Gorgeous & good luck!
Could you make the yellow part larger? If that is too big maybe you could add borders to the circle in the center, maybe the curvy triangle border would work.
I just finished this and wanted to share it with you all. I am thinking about enlarging this to a king size but not sure what to do next. Any suggestions?