I made this one with a little larger center because I fussy cut the stars. I don't think it matters what size you make the center, guess it depends on your fabrics and what you prefer. In fact, I was so upset after making half of these blocks that I had made them backwards. If I had placed the darks where the lights are, the center would have lined up with the zig zag of the darks. Instead the center stands out. Actually I liked that the stars standing out. Please post a picture when it's done.