Here is my little how to.
Sew three sides of the fabric together. On the forth side make sure to leave an opening so you can turn your fabric right sides out. Also remember to cut your corners, by doing so it will make your corners pointer and flatter. I made the mistake of forgetting to do that.
Oops, happens to the best of us! Seam rippers can be your best friend and a must have in any sewing kit.
Sew the opening of the fabric together using a strait stitch. Continue around all four sides to give a finished look and it give more strength to you covers. Cut the Velcro to size and pin to fabric making sure they close and over lap on the correct sides.
Try to sew as close to the edges of the Velcro as you can see. Finish the additional pieces of Velcr and your done!