As I was knitting StellaLuna, I was thinking about all the different ways one can construct the shawl. Take for example a triangular shawl. There are at least 3 different ways it could be knitted:
1. Top-to-bottom: cast on 4-6 stitches and as you knit you would increase at the ends and around the middle stitch. The lacy edge is knitted last. Casting off 300-400 stitches might be the hardest part. Haruni by Emily Ross is an example of this construction.