Use a 1/2 inch bias maker. Starch the resulting band heavily as it is coming out of the maker iron to dry crisp. Then cut the bias tape right down the middle. Take one half and sew the folded edge on your placement line. After sewn down, lift up the raw edges and trim with sharp small scissors the lower raw edge. The one lying toward the background. Now simply needle turn the top raw edge and sew down with small appliqué stitches. There you have it.