I really try to label every quilt that I make, especially if it is a gift, like the quilts I make for our biannual family reunion quilts. I just simply say, "machine pieced by my name, my city and state and the date of the reunion. In some instances the reunion quilts have been made in memory of a loved one in our family passing away. Even if it's a "utility" quilt for the couch, I try to remember to make a label, as I forget when, where and why I made the quilt. The label doesn't have to be fancy, I write mine out on a piece of white fabric or even muslin, using a Pigma pen. I also try to remember to heat set the label after writing it. I find that by ironing a piece of freezer paper to the back of the label helps keep the writing more legible and it will last longer. Take pride in your quilts, it is the same as signing a painting when it is finished.