I remember seeing that too, but don't remember where. You made a neutral knife edge pillow cover, about 18", sewed a button a couple inches from each corner, then made 12" quilt blocks with buttonholes and buttoned them on. If you keep the quilt blocks 12" shouldn't be too hard to duplicate. There are lots of seasonal block patterns out there, just make a single block. Quilt it & bind it & add buttonholes.