Here is how it was done:
1) 3 panels were sewn together (seams matching up with the chair legs) using the old fabric as the pattern.
2) The fabric was stapled right side down, at the top of the chair (so it can be folded over to cover the chair and have a nice finished edge) A TACKING STRIP was used for this step (thin cardboard strip as shown below) to give a nice crisp looking finish.
4) Pull the fabric tight and staple a few sections of fabric to the bottom of the chair, making sure it is centered.
5) Fold the edges under, then, using upholstery strength thread and a special curved upholstery needle, hand sew the two sides of the chair back to the fabric that was stapled on as the chair front. (pic below)