Elizabeth's hat is done. It was straightforward and the only modification I've made is to replace the knitted ribbons at the back (for tying the hat on) with chain cords as they looked better.
The brim, however, is rather wavy and might need to meet a damp cloth and the iron.
Extra long coloured pipecleaners arrived in the post, so I unpicked Sam's hat and replaced the pipecleaners with dark blue ones. Being longer there were fewer joins and being thinner these were less noticeable. It was easier to stitch and the result is much neater.