That is so beautiful!!! I have been looking for a nice shawl pattern, I think I may have found it.
I know exactly the predicament you are in. Can you knit with your cast on? How long do you have to have it on?
I cracked my elbow a year ago, and had to have a cast all the way up to my shoulder. (Not fun when you have really long arms.) Even after it was healed, I still had trouble. Then I, ahem, hurt it again, in October, and couldn't do ANYTHING. :( I would knit as much as I could, but bending my arm made it fall asleep. I ended up having to have surgery in Feb, and now it is almost completely back to normal!!
I'll be thinking of you!!!