It may look as if I used the decorative stitches on my sewing machine, but I did this with a darning foot. Although I did look at my decorative stitches to get ideas. I have much more practising to do, but I think I do the "L"s pretty well.
Have you ever done this? I have a down pillow that was so soft that I never used it because it was like sleeping directly on my mattress. Before getting rid of it, I decided to try to resize it.
This is the pillow when I began- normal size: