Sorry.  I wasn't clear.  This was a set of instructions I downloaded off the 'net.  I find many instructions for drawstring backsacks on the 'net now, but they're not the one with the self-fabric stitched into the side seam at the lower edge.  My only other alternative was to take an old one apart.  The trick is in the sequence; there's a very specific sequence involved to get the bag to work.  Any help is appreciated.