I got my second downy quilt and want to do it as quickly as possible as they ask you to send back w/i 2 weeks. I want to try to do the pillow case method to finish the quilt but am afraid to because of wrinkles when quilting the top because they ask you to do a lot of machine quilting. has anyone else done the pillow case method and have any suggestions to prevent wrinkles and tucks of fabric when quilting after the pillow case method