I think I would fold over the fabric, and hand stitch in place where the fabric decided to "sneak out". I think I would then do a small zig -zag stitch over the rows to make sure none of the other fabric decides to "sneak out" too. First of all, congratulations on making the quilt, and although I've been quilting a long time, sometimes I've had the same problem. Whatever you do, don't quit quilting because of one possible mistake, after all the Amish deliberately put in a small "mistake" because only God is perfect. I don't need to do that,as I can make a mistake all on my own., LOL