Measure your book from inside the cover next to the spine, all the way around the closed book, to inside the back cover close to the spine. Add one inch to the height and the width and this will be your pre-measured dimensions. Choose a fabric, or two contrasting fabrics, Cut the fabric, plus a thin piece of fusible fiberfill, to your pre-measured dimensions. Fuse the fiberfill to the wrong side of one of your pieces of fabric. With right sides to right sides sew all the way around (1/4” salvage) your fabric leaving an opening for you to turn your cover right side out. Whip stitch this opening closed and iron your cover flat. Sew small strips of elastic to the top and bottom of your cover near the spine at the front and the back. This way your can easily take the cover off your book and wash it. You can now whip stitch a pocket to the outside front of your cover for reading glasses and, if you are covering a religious book, you might like to make a pocket on the inside front section of your book cover to hold your family’s genealogical records.