Step 4: Attach piping to the front square of the pillow.
Remove the piping from the package. Near the center of one side, begin lining up the open edge of the piping to the right side of the fabric. Attach in a counterclockwise direction; this direction will follow your machine stitching later. The open edge should be flush with the edge of the front square. Use pins or clips to attach the piping. (I use binder clips purchased from an office supply store. They work well and are quite versatile in my sewing room.) See figure 4.
When you reach a corner, make two or three perpendicular cuts into the bias strip of the piping to make it bend to fit the corner. Take care to only cut the bias section, not the actual piping. See figure 5.
Once you reach your starting point, leave a 2 - 3 inch "tail." Make sure you have at least an inch of overlap with both ends. Leave a little more to be on the safe side. Cut away the extra piping. See figure 6.
Step 5: Connect the ends of the piping
Use a seam ripper or snips to remove the seam on one end of the piping. Remove the stitches. Pull back the bias fabric. Cut about an inch of the white piping. Tuck the beginning segment of the piping into the end section. Check the fit. Carefully cut more white piping until both ends are touching inside the bias covering. When the fit is right, fold under a half inch of the bias fabric from the end; this segment should be the one from which you cut the piping cord. Tuck the piping from the beginning inside the end. Adjust to fit. Clip the overlapped section to secure it to the fabric. See figure 7.
Step 6: Baste the piping to the front square
Use a zipper foot with the needle position set to the far left. Use a basting stitch to attach the piping to the front. See figure 8. Take care as you go around corners (figure 9). With basting, your goal is to secure the piping for the final sewing so stitching need not be flush with the piping.