The most important place I have found to use STD, is on the binding. I sew my binding on the right side of the quilt (the top), and carefully press that seam open. Stretch it a little so you can really see the seam. Turn the binding to the back to cover the stitching line by about 1/16 in. and pin, baste or glue. School glue ironed down works the best. Then go back to the front and STD. None of the stitching will show after the quilt is washed. It's beautiful. (Mine aren't always perfect either. LOL)