I intended to use this yarn for my pianist scarf. But I still learn double knitting so it was changed. I found this pattern after I had started my swallowtail shawl. This pattern is easier. As you see it's done first. I really love the result; it's beautiful, clean and neat.
This is what we call Textured Pattern. I had learned about knitting M1R and M1L technique from this pattern. You can use yo stitch instead.