I used size 7 or 8 needles, make two extra feather and fan repeats, and made it a little longer than the first. I used nearly every inch of the two balls. It only took two days to knit.
I wrapped both SWS and Mille Colori neck warmers up for Christmas and gave them to my sister, saying, "You may keep one." I was planning to keep the one she didn't want- no big deal, right? Apparently it's bad form to give someone a present and then demand half back. My sister didn't care but the guys thought it was the perfect antithesis to gift-giving.
I just wanted her to make an unbiased decision. If I gave her one, but then said, "Or, you know, you can have this one if you want," she'd most likely assume I wanted her to have the one I gave her. Really, I wanted her to have either. But not both. I need to think about my cold neck too.
In the end, she kept the SWS one and I kept the Mille Colori one.