Place the front and back garment pieces and pocket bags right sides together. Pin together around the garment and pocket bags, making sure that the pocket opening marks are lined up.
Taking a 1cm seam allowance, sew from the top of the seam down to the top pocket opening point. Pivot mark, sew around the pocket bag as far as the bottom pocket opening mark, pivot again and continue down the rest of the seam.
Neaten the seam using your chosen method.
Flip the pocket towards the front of the garment and press carefully, making sure you keep the seam allowances flat.