Don't be discouraged; your quilt looks great! I wouldn't call it busy, just active. If you want to calm it down, try a narrow white border, than a fairly wide solid border from one of your pinwheel fabrics. But I think once you quilt it, then drape/gather it on your swing, it won't look so busy. Try it out by draping the unfinished top on your swing. Either way, you've done a great job.
Darren