This took a looooong time! I held the two strands of yarn together throughout - I love this combination! - and followed the instructions except for the eyelets.
When finished, I didn’t go through the complicated blocking-drying-sewing-hanging procedure recommended by Sandra McIver. Instead, I sewed the sleeves and collar right away in a normal sewing stitch, washed the cardigan, squeezed it, draped it over a broomstick, and hang it up at the top of the staircase - just like Annette Danielsen’s Hvirvelstroem.
The shape was as it should be, but I didn’t like the big bat sleeves. Also, I didn’t think they would lengthen, as Sandra McIver maintains. I made them 2 inches longer than the pattern - because I’m really tall - but they were only just long enough.
In the meantime, I knitted another model from the book for a friend. I frogged this one and used the yarn for my “Green Whirl” = another “Hvirvelstroem”.