I have made many of these quilts, both with larger blocks throughout (9" finishing to 7") and others. It doesn't matter as long as you make all the blocks the same size. Some of them I made had large blocks and then 4 small blocks that totalled the same size as the larger blocks to go in between the larger blocks. I have made them from denim with either flannel or batting inside for my grandsons who like to drag them everywhere and they have held up well. I used to make them to sell in a boutique in San Francisco until my hands finally said "that's enough". They make great gifts and everyone loves them. Just have fun with it.