"Fablon" do a nice line in self-adhesive leatherette. It comes in "tan", but when I used it for the seats on my Admirals Barge I had to paint hem blue. Worked fine. Using Balsa as a base for the "cushions", the quilting effect was achieved by simply runing the edge of a steel ruler over the leatherette with enough pressure to indent the balsa. Small brass pins at the line crossings finished it all off nicely. Photos are on my build blog on this forum. BY.