It's based on Seraphina's Shawl, a batwing shawl designed by Doni. I found the design linked in the crochet community. The web page teaches how to make it. There are some mistakes in the instructions, but if you have crochet experience, you can work around them.

Doni's web page shows that she tends to use several yarns held together or Lion Brand chunky yarns. I used a single fairly thin strand of cotton/rayon yarn. The pix don't show it, but the yarn has blue and red bits in it, which combine for the overall purplish effect. I used a bigger hook than one would normally use for thin yarn, which makes the shawl more open and lacy.


Here's the overall shape of the shawl, hanging on the bathroom door


I took this picture in the bathroom mirror


When the OH saw my attempt to photograph it myself, he offered to take a picture.