You need to cut out two pocket pieces, one in garment fabric and one in lining fabric, plus one zipper to fit the pocket opening.
Our sewing pattern includes a paper pattern piece for the pocket pieces or the measurements are given in centimetres in the sewing instructions.
The pocket opening (the stitching line for the zipper) is shown on the pattern piece and should be marked on the wrong side of the fabric using transfer paper and wheel. Transfer marks for the centre and ends of the pocket opening to the right side of the fabric with large basting stitches.
With right sides together, pin the lining pocket pieces on the garment fronts so that they overlap the upper pocket marks by about 3 cm and evenly overlap ends of the pocket opening.
Working from the wrong side of the front, stitch along the marked lines for the pocket opening. Cut between the stitching lines up to about 1 cm before the ends of the pocket opening, snipping into the corners almost up to the stitching line.
Pull the pocket “bag” inwards through the gap and press the edges.
Pin zipper under edges of pocket opening so that the zip teeth are visible.
With a one-sided sewing foot (zipper foot) edge-stitch edges of pocket opening onto zipper tapes. Or, if the stitching lines are to remain invisible from the outside, from the wrong side of the front section, pin the zipper tapes on the pocket pieces and seam allowances, catching in the fronts, then remove the pins from the right side. With a one-sided sewing (zipper) foot, stitch the pocket opening allowances on the zipper tapes exactly on the stitching lines, first the long edges, then the ends of the pocket openings.
With right sides together, pin the fabric pockets on the lining pockets and stitch together all around the edges.
If your garment fabric is soft and thin, cut out all pocket pieces in the garment fabric and make the whole pocket in the garment fabric. When stitching around the pocket openings, don’t begin and end in a corner but in the centre of a long side.