Draw pencil lines across the blind at these points. If possible, cut these strips from the length of the fabric rather than across the width as the weave is tighter and the pockets will wear better. Cut as many strips as you have marked sewing lines on your blind. Click on figure for detailed view. Fold strip in half width ways, with wrong sides together and pin the open edges together.
Machine sew one side and along the length close to the edges.
Click on figure for detailed view. Thread up the sewing machine with threads to match both the face fabric and lining and check the tension. Do this by testing the machine with two different coloured threads, one colour on the top to match the lining and with bobbin threaded up with second colour to match the face fabric. Make sure that only one colour shows from front of fabric, with second colour only showing on back. Alter tension accordingly.