The gals in my sewing club decided to do a mystery quilt using 5 fabrics. I recently finished mine and have it on the long arm. I used fabrics out of my stash and pieced the backing with fatt quarters in my stash as well.
When the blocks are sewn together they show a secondary pattern of the crosses. My busy fabrics needed that.
This pic shows the borders I was deciding whether to use or not. I decided to add borders since I already had them cut.