In your kit you will receive one square piece of material and two smaller rectangles as shown below.
Place the two rectangular pieces on top of the square piece right sides together and pin them in place.
Sew along the pinned edges with the foot aligned to the edge of the fabric.
Next hem the opposite edge of each of the rectangle pieces by folding the material over twice to leave a neat edge.
Now you need to pin and sew the reamining two sides of the cushion cover together
Next press the seams open and snip the corners off
Turn the cover right way out and you are ready to put your insert in