Download and print the diagram, then draft a pattern from the guide provided onto a piece of paper. Neaten the two long edges on the front and back pieces. Fold and press 1cm, then 4cm, along the top of the pocket rectangles. Fold this to the right side of the pockets and sew each side edge with a 1cm seam allowance.

Trim the corner bulk and turn the top part of the pocket to the wrong side. Tease out the corners, press flat, and continue to fold and press the pocket side edges and base. Edgestitch the 1cm fold at the top of the pockets, then position them 5cm in from the side edges and 31cm up from the base. Pin and edgestitch to secure.

Make three inverted pleats at the top of the front and back pieces, one in the centre and two either side. Stitch 9cm through the centre of each pleat and press flat. Lay the front skirt piece over the back one, right sides facing, pin and attach the side seams, then press the seams open.

Carefully fold and press 1cm, then 8cm, at the top of the skirt on the wrong side. Pin and edgestitch in place, leaving a small gap on one side. Make another stitching line 3.5cm above the first to form a distinct channel

Attach the two shorter edges of the belt loop rectangles, turn to the right side, and press flat. Turn in the raw edges of the top and base pieces, then position each loop over the four inverted pleats on the skirt sides. Sew above and below the channel.

Cut a length of elastic that fits comfortably around your waist and add 2cm. Attach a safety pin to one end and thread it through the channel, entering and exiting through the gap. Lap the ends over one another and stitch. Pull the elastic inside the channel, then close the gap.