Your quilt is just so pretty. When something is so pretty, I too have a hard time deciding what to quilt on it for fear of ruining it. But when it is all said and done, any quilting perfect or not ends up enhancing the quilt. I've yet to say "oh my quilting ruined it" and I'm far from a professional quilter. When I looked up the pattern, the design she used was quite pretty. Just copy the original pattern maker's design idea. I like your version better with the white background.