I've made one too, with another on my to-do list. I made Osterdalen.
It's a lot of work, but really, really worth the effort.
If you want to give it a try, I suggest you try Wendy Johnson's Baby Norgi
first. It's a smaller version of the same kind of sweater and a great place to try fair isle and steeking. Oh, and be sure to check out Ingy's thread on steeking