At some point when I wasn't looking, people starting wearing their scarves a different way. I always wound mine round my head, or perhaps tied a half hitch. But now people do it differently, and luckily I don't have to describe how because I've just found this diagram in Nigel Holmes's brilliant book of Wordless Diagrams. This one is entitled 'How to wear a scarf European-style'. It also contains masterpieces such as 'How to conduct an orchestra', 'How to wave like a royal', 'How to make sure your coq au vin does not come out rubbery' and many others.
Wordless Diagrams is published by Duckworth, in 2005, and the ISBN is 0 7156 3395 3. Here's a link so you can buy it from Amazon: Wordless Diagrams
Diagram reproduced with Nigel's permission.