When making pockets, place a pin at each end of the pocket mouth between the last stitch on each side. This is to safeguard against cutting too far! Use a fabric sealant such as ‘fray check’ before cutting, on fabrics that fray easily.
Holding jettings out of the way on the underside, cut diagonally to the last stitch. This cut is through the jacket layer only, not the jettings! The cuts should now form a triangle, ready to turn the jettings through the opening for pressing.