I use Best Press when starching. I put it in a 3 oz. non-aerosol hair spray bottle purchased from Sally's Beauty Supply. You can spritz a small area with a fine mist instead of soaking it with starch from regular spray bottle. This way the Best Press goes further, too. Don't iron down the length of the seam. Carefully finger press the seam open or use one of those little wood pressing tools, lower iron onto the area and hold in place a second. Once I have everything laying as it should I give the seam a light spritz and press again dry and to set seam in place. Takes a little time but I enjoy the crisp results.