Flip the vinyl table cloth over so the vinyl is facing the table you are working on. Lay the book down on the table cloth, completely open. Measure 5 inches longer on each side of the book and 1 inch longer at the height of the book.
Cut the cover to these measurements. Place the book back on the table cloth. Fold each side over to create a flap. Pull just tight enough so there is room to bend the book closed. Pin in place.
Sew the flap closed at the top and the bottom of the table cloth. Slide the book in and your vinyl table cloth book cover is complete.