Before you know it you will have a full set! I currently have 6 finished and plan to do at least 2 more red ones. For unity, all the backing fabric is the same, and the same red fabrics were used repeatedly on the fronts. I was going to use the same binding, but ran out of that fabric. I stuck with yellow for the binding.
Have you tried this yet? I’d love to hear about your pin weaving experience!