What really fascinates me about Steve Mack’s Spot Illustration is his natural-looking technique, surprisingly a complete digital (Adobe Illustrator based, 100%) process. He really doesn’t want to explain how he creates these great-looking illustrations:
“...Truth is I am keeping kind of tight lipped about this. I devised a little program modification in Adobe Illustrator that lets me texture on the go, dynamically. That means I don’t have cross software versions of the same illustrations.”
But you might find some clues in his website, together with fine examples of his artwork.