Valerie Ann: Have you tried sewing it slowly? I mean really slow. A slower speed will enable you to "steer your quilt better to keep the stitching where it needs to be. Also, try to stop obsessing about a straight line. Most people don't deliberately look for crooked stitching. Even if you know where there is a mistake, don't point it out to people. According to a local quilting instructor I do lots of things incorrectly on my quilts, but my friends don't know that. They only see the finished quilt they get and think it's beautiful.