In A Whirl Scarf

I wanted to design an easy pattern to use up a whole ball of Scheejpes Whirl and to show off the subtle colour graduation of the yarn. It's a good size scarf - approx 28cms wide and 180cms long but could be made larger or smaller. (Any yarn could be used but you would need to adjust your hook size to suit your chosen yarn). UK crochet terms are used. The pattern has so far only been tested by me, so please forgive any rookie errors :)