Tumbling blocks

I just finished this tumbling blocks quilt.  It is 98 x 88 inches, quite a large one.  The batting is Hobbs polyester.  The top and bobbin threads are off white polyester.  The outer borders were wavy, so I used piano keys to take up some of the slack. The inner borders were also wavy, and the diamonds controlled some of it, but not as much as I would have liked.  The center section has hundreds of tumbling blocks.  Each diamond shaped piece got continuous curves.  The back is really pretty.  I love how all over quilting creates a secondary design on the back of a quilt.