I would like to air brush. Just don't have the setup for it now. I dip dye what I can. For me, it has given me the most consistent results. I use Feibing's Pro dye. It does use a lot more dye that way, and clean up can be a burger. But the results are good for me. Prior to that, I was using the wool dauber approach. For small pieces, that works fine, but the larger the leather, the more splotchy it became.