After two false starts (I'd tried the top-down approach before and couldn't manage joining eight stitches in the round then either), I settled for a bottom-up version. Juneau Fair Isle Hat (no way was I attempting Fair Isle colour work with a new pattern) to make myself a stripey version.
The result was a humongous hat with ginormous ear-flaps that wrap around my neck.
Posh Patricia is so lovely to knit with. I'm looking forward to buying more in the New Year.