Use this easy tip to find the right sewing machine tension for every fabric and every project. Sew a diagonal, pull until threads break. Based on where threads break you can tell how to adjust tension.
It is easy to create a professional-looking ready-to-wear-style zipper facing using your sewing machine. Says can be used for invisible zipper. Still have a question of how much of seam allowance at waist /facing seam gets trimmed off.