I made leather cording to wrap around the leather seat covering and the next step was the staple down the cording around the seat cushion. After doing all of the above I could finally start putting the leather over the cushion. To ensure I evenly spaced the tacks I put down paint's tape and marked one inch spaces around the chair. The leather was stretch and temporarily tacked in place.
The project was finished off with decorative tacks and here it is.