I recently finished this long term project. I have worked on this and a couple of other pieces every year at one of our Medieval Faire demos. I was trying to work out how long I have been working on them - probably one day a year for ten years! It is nice to have it finally finished. It is a record of how my skills have developed over that time.
The fabric circle is gathered into a band which is decorated with green ribbon, I have added a metal comb inside the band to help keep the caul in place, and a couple of little buttonhole rings to slide bobby pins through.
This link to a previous post gives more information on the construction process: http://broidermebethan.blogspot.com/2014/05/purple-velvet-caul.html