Then pull the yarn through both thicknesses. To give the edge extra strength, sew a strip of rug binding over the back of the hem.
A square cushion cover is simple to make and offers endless scope for using fabrics and different edgings. Try using more unusual fabrics – a cover made from a piece of old tapestry, perhaps with tassels at each corner, will have a rich, Gothic air.
Always make a cover to fit over a cushion pad, rather than putting loose fillings straight in the cover, so that the cover can be removed and cleaned. For plump cushions, cut out the cover the same size as the pad without allowing extra for the seams.
Measure the size of the cushion pad and cut out two squares of fabric to fit, adding an extra 15 mm (Vs in) all round for the seams.
Place the cushion back and front together, their right sides facing. Stitch seams for about 50 mm (2 in) from both ends of one edge, leaving the centre open for a zip. Tack the centre of this seam allowance together and press the whole seam open. Pin the zip face down over the seam and tack. Stitch the zip in place from the right side.
Stitch round the other three edges of the cover. Trim the seam allowance at the corners. Neaten the raw edges with machine zig-zag stitch.
Turn the cover to the right side, pulling out the corners if necessary with a pin. Press the cover. Handstitch a fringe to the sides, or decorative tassels to the corners.