The border is 3" wide.
Cut 2- 16" by 3" pieces and sew them (1/4" seam allowance) to the sides of the main piece.
Serge or zig-zag the edges, then iron flat.
Now cut the border long enough for the top and bottom. (Approximately 28")
Sew, serge, iron.
Now to create the ruffle, I chose to pleat it, instead of gather it.
I stuck with the random sized and spaced pleats.
I used a 5" wide piece of fabric that was 2 1/2 times as long as the perimeter of the whole pillow.
I folded it in half and ironed it. Then I connected it
Then I pinned and pleated as I went.
The front looked like this.
The back looked like this.
I sewed all the way around to secure the ruffle.
I did an envelope back on all of my shams.
Measure the finished width and add 8 inches, then cut it in half.
I hemmed them on one side. Those sides would overlap about 4" in the middle.
They would line up with the other side and the top and bottom.
I pinned on the sides and sewed all the way around with 1/2" seam allowance.
When you turn it inside out, the back looks like this:
This pillow is the same except the ruffle is smaller. It is 3" wide fabric, folded in half.
This pillow is similar except for the front piece.
For the inner pleats, I used a 4" strip that was 60" long.
I pinned it in the middle, then pleated all the way to the edge on both sides.
After I had this, I sewed one side.
Then I ironed it flat so the front looked like this.
Then I had to pin it to the other piece of pink fabric.
I zig-zaged the raw edges.
I sewed and ironed it flat.
This is what it looked like on the back:
Here is the front:
instead of pleating, for no reason other than running out of fabric. :(
I made an envelope back the same as in the instructions above.