I followed the pattern as written, except for some needle changes - I started with 5mm needles for the brim, and gradually increased to 8mm around the point of the increase row, and then back to 5mm for the final decreases at the crown. It worked really well, I think.
I'm not sure what pattern Lisa used for my hat, but it is knit in an Elsebeth Lavold yarn (Chunky AL - wool and alpaca) - and by some fluke, the burgundy shade is a near perfect match for one of my favourite winter scarves!
So, that's my hat swapping over for a while (I'm a bit hatted out with all the beanies I've been knitting). Next up is the tea cosy swap - got my partner assignment today. :-)