Well...........after improvising on yarn etc, I have finally finished the headband (not felted as you will notice, I truly was gonna give it a go, but couldn't get yarn anywhere near the suggested ply, or more importantly, yarn that was suitable for felting) I ended up adding a few sts and crocheting till the suggested length and voila..... Caitlin, my daughter, is pretty happy with it, felted or not, and is already wanting a purple one, lol. Can't wait for the next pattern.
The headband looks great! Good luck on your mittens :)