I love to do samplers and with the bigger sizes blocks, I like to separate them with sashing. I would use a batik for the sashing - multi-colored and I would use your favorite color in the batik for a border. I would then have enough of the batik to use as your binding. Sorry, but I don't like black, white, grey together with red. I would use a grey for the backing. Good luck. It will be pretty when it is done, I am sure. Edie