Felting my knitted scarf

Felting my knitted scarf... Ok, it's time to felt this scarf before the weather gets too warm to wear it! I'm using some large plastic buttons to create my Shibori effect. I'm securing them with some strong cotton, just so that they stay in during washing. Then I threw it in the washing machine for a 40 degree cycle... Normally I would do 60, but I don't want too much shrinkage. Just got to get it dry now... Then decide on decoration. I'm tempted to write up my full method as a tutorial for my new 'How to Make' site... I'll let you know more about that later.