How often do I make mistakes?! Every day!! I have learned at this old age to just keep going. Right now I am basting a quilt sandwich and realize how "not squared" it is. I refuse to go back and rip. Once that baby is quilted and washed it will be fine. It will not be used as a wall hanging or even spread out on a bed. It will be folded up ready to cuddle up in on a recliner or sofa.