An artist, writer and  book illustrator for major publishing houses, Warhola is the nephew of Andy Warhol, whom he remembers visiting in New York City as a child in 1962,  in his children's book Uncle Andy's.

Warhola has designed a large number of science-fiction and fantasy covers, and illustrated children's book including Jack and the Beanstalk, The Tinderbox, The Brave Little Taylor, Well, I Never, and others.