How to Make a Precision Placket
4. Cut a strip of 1⁄4-inch-wide lightweight fusible web tape, such as Lite Steam-A-Seam 2 for both placket edges. Finger-press the strips, paper side up, to the right side of both column outer edges. On the tall column, the fusible strip should stop 11⁄4 inches from the top edge. Press with an iron to fuse the web tape to the placket.
5. Remove the fusible web tape's paper from the inner column's edge. Fold the edge along line 1 to the placket's wrong side. Next, fold along line 2 and bring line 1's folded edge to meet stitching line 3, enclosing the seam allowance within the column. Finger-press, then fuse with an iron.
6. Topstitch along the inner column's outer edge from the cuff end to 1⁄4 inch below the top. Pivot, and stitch across the column to just past the vent. This encloses the clipped inner triangle and helps the placket lie flat.
7. Flip the tall column right side down over the inner column. Remove the fusible web tape's paper from the column edge. Then, fold along line 6 to turn the edge to the placket's wrong side.