'How to' crochet a neck warmer without a pattern

Another easier than it looks crochet piece, I had a wooly hat, made & given to me by the lovely Gemma and although it had stretched and was a bit too big to wear I couldn't bring myself to get rid of it, the wool is lovely. So I carefully pulled it down back to a ball of wool. To begin I just chain stitched about 15 chain, with another three for turning, to create the narrow width and used treble stitch on from there, just turning the work as it goes until it resembled a short scarf. The scallops come from a couple of trebles into one stitch alternating with slip stitches. I sewed the toggle on fairly loosely so that it would be easy to push through anywhere required for a snug fit. Guess who is getting it for a Christmas pressie!