I'm making a full-bed quilt for a grandson. The quilt is a hodge podge of things he likes. I was so unhappy with it when I was laying it out with sashing - trying to decide what color would pull this poor thing together better. When I added the cornerstones to the sashing it totally changed the quilt - to my eye anyway. I have rarely used cornerstones before - I'm a "pedal to the medal" "how fast can I do this?" kind of girl. But ... these took this project from "don't like it" to "I think he'll love it" in the flash of a 2 1/2" square.