Seats finished, ended up applying the paint by sponge 3 more coats. The airbrush didn't like the thickness of the paint, it is water based and can be diluted by up to 10% but decided to keep the paint mix undiluted and sponge apply. After drying did use the airbrush to apply 3 coats of finisher which gave the finish a Matt look, my choice as didn't want the Leather looking too shiny, prefer the matt look. Very pleased with outcome, not the best picture doesn't show how well its covered the wear on the bolsters but it has without making the seats look too perfect, just the finish i was after.