I make Art Quilts, so usually they aren't as large as a quilt for a bed, but some are. Anyway, I always use some of the fabric used on the top and piece it together to get enough yardage for the back. I can't say I actually make any blocks that are the same as what was pieced for the top, but sometimes the label is made that way. All my quilts have a label, which states it's title, what it was made for or whom, my name, city, state and date completed.