They are adorable! I would strongly recommend (mother of twins speaking here)
that you label the quilts with their names on it. Even if you make them slightly different and even when they are young teens, they will fight over which one is whose!
LOL, my twins are 16 (boys) and just recently got into an argument about their quilts. I said "look at the label" and the one holding the quilt sheepishly said, "its not mine."