First thing I would do is cut down that outside light border. It is just too big. I think it should be the size of the green border it is next to. Then I think that simple patchwork blocks would be wonderful. The quilt is getting pretty big now, so maybe a pinwheel in one and a star in the next one. Keep it simple, maybe 6 or 8 inches. Then bring some more of the deep rose out to the edge. It is going to be stunning!