Step 6: Sew front and back together
Place the front of the pillow, right side up, on your work surface. Take the two back pieces and lay them right side down on the pillow front. The pieces will overlap. If your fabric pattern follows a specific direction, as the examples in this project do, make sure you arrange the pieces accordingly. Adjust the pieces until you are satisfied with the layout. Make sure you have enough seam allowance over and around the piping cord. Starting with the overlapped areas on the backing, clip or pin the pieces together. See figure 10.
Step 7: Sew the front to the back of the pillow
Use either a zipper foot or a cording/piping foot to sew the front to the back of the pillow. Place the needle as far left as possible to get close to the cording. Start sewing at one of the overlapped back pieces. Slowly sew around corners, close to the piping.
The zipper foot may leave some gaps but it will work. Even better is a cording or piping foot. With my machine, I use a pintuck foot. The goal is to have a raised area on the foot under which the piping can travel. A standard presser foot will not work for this project. See figure 11; the piping is layered between the front and back, but the indentation of the cording is visible. You may "feel" the piping to ensure a straight stitch.
Step 8: Turn the pillow right side out
Once you complete sewing the front to the back pieces, turn the pillow right side out. Examine all the seams. Note any areas that leave gaps or cover too much of the piping. Restitch sections as necessary. When satisfied, trim the excess fabric and piping to 1/8 inch. Leave the project right side out. See figure 12.