This was a really quick and fun project to do! The pictures here are of my second attempt - lots of mistakes on the first one :) the image below is after trimming the final square since I wasn't planning on quilting it.

There's one measurement that is missing in the docs - the largest piece from C: 12.5" x 3" , however Esther does mention this in a discussion thread.

Esther's tip of using a little piece of scrap fabric to avoid nesting was so helpful!