Very welcome Mark. Are you an artist then?
So here is an unfinished one to help you understand the process.
An airbrush will get you amazing, unparalelled ability to blend colors and not show brush strokes, because, well, there aren't any. So you can do a seamless blend of sky color from light blue to dark blue without any brush strokes at all in a way that is just absolutely perfect (in the right hands of course).
The downside of this is that you can't get a hard edge to anything. This is where its helpful to think about painting your house. If you are painting your house with a spray gun instead of a manual brush, well, what happens? You need to mask the hard edges where you don't want paint, like the baseboards. Same thing with the airbrush, the way you get a hard edge is by masking. So with that in mind, look at the painting below that is midstream.
You can tell where he's painted, where he has masked, etc.
Also since the paint is sort of opaque you can spray one color on top of the other once dry. So you spray all your light colors first, then the darker colors can be sprayed on top if desired. So you are building up the picture as you go, and you end with this really complicated masking process, but the end result is beautiful and reproduces onto the product far better than a traditional painting would.
Now, someone who is an actual artist that has used this method might have more info but this is what I picked up from talking to Greg and others.
Lastly, notice scale, all the way to the countertop, these things are big.
here's a copy of the finished product from ebay
