At this point, your pillow is complete. It should work well as is. Just put the pillow insert through the opening, fluff up and adjust, and show it to your friends and family. You can turn the pillow up a notch by adding a button and buttonhole closure to the back.
Step 9: Create a buttonhole
Use a ruler to mark a halfway point on the top backing piece. If you're using a one-inch diameter button, draw a half-inch line on either side of the halfway point. Use a chalk pencil or air-soluble marker (aka disappearing felt-tip ink marker) to do the job. See figure 13.
Follow the instructions for your sewing machine to create a one-inch buttonhole, or go old school and make a buttonhole by hand.
Step 10: Add a button
Open the buttonhole carefully with snips, a seam ripper, or craft knife. (You want a tool that is sharp and precise.) Check your button size by passing the button through the hole. See figure 14.
Lay the pillow cover flat, front side down. Line up the back pieces so that they are centered. Using the air-soluble marker, make a dot through the buttonhole onto the bottom backing piece. This dot will mark the spot where the button must go. Sew on the button either by hand or by machine. See figure 15.
Step 11: Enjoy your pillow, and plan to make more!
Insert your pillow form, and you are done. Show your friends and family what you made. Plan to make more for other holidays, special occasions, or any occasion. Try making a few covers from fabric scraps. Look at how creative you are!