How to sew a double welt pocket on trousers: a visual guide.
Parts for a pocket 12 cm (4.7") wide.
1- Iron the interfacing on WRONG side of the pocket welts. Press the two welt pocket pieces in half, from the RIGHT side.
2- Mark the guidelines on the RIGHT side of the fabric.
3- Pin the two welt pieces to the RIGHT side of the garment.
4- Stich down the exact center of each welt pocket piece: start and ending points are marked by pins..
5- Cut along the center line & diagonals. Stop 1mm before the horizontal stitching.
6- Push the seam allowances to the WRONG side and iron.
7- Stitch the triangle to the seam allowances of the welts, from stitch line to stitch line.
8- Pin the upper pocket lining piece to the upper welt. Pin the lower pocket lining piece to the lower welt
9- Stitch the upper pocket lining piece to the upper welt. Then stitch the lower pocket lining to the lower welt.
10- Stitch along the edges of the pocket lining.