My mother had a friend that pieced and hand quilted many quilts for people. She pieced a log cabin quilt and accidently turned one of the blocks the wrong way. She didn't notice the mistake until the quilt was completed and it was displayed at the wedding of the daughter she made it for and then it really jumped out at her. I think we are so close to our own work that we don't see some of the mistakes we make until too late to change them. Your quilt is very beautiful and you have done nice work.