of fabric and a hemming seam 11 which extends parallel to the basting line 10 and which joins together the free edges of the pieces of fabric 2 3 the flap provided between the seam or basting line 10 and the hemming seam strip is then doubled over substantially at the basting line 10 to define at the unexposed or inside face of the fabric a fold line 20 which is then sewn by means of the cord like element 1 which securely joins the fabric pieces 2 and 3 together concurrently with the flap which is delimited by the seam or basting line 10 and hemming seam 11 the seam 1 on the exposed or outside face is thus arranged so that the fold line 20 defined on the outside face of the fabric overlies the seam or basting line 10 which is thus hidden from view as illustrated in fig2 the cord element is used to form stitches having a long pitch requiring a reduced number of perforations to be made in the fabric thus providing a mechanically strong joint or seam on the outside or exposed face of the fabric the cord like element constitutes a decorative element defined by the stitches having a long pitch and extending linearly and parallel to the fold.