We had a speaker at my guild a few months back. She had this GORGEOUS quilt. She told us all about how she pieced the landscape top and then.... turned the quilt around to show that she'd (GASP!) quilting her mouse pad right onto the back! It was hilarious. She decided to leave it, rather than unpick the stitches, to encourage quilters and let us know that even the pros make mistakes. :) Loved that. Still makes me giggle.