My old friend Italian artist Andrea was interviewed (PDF file) by BattleSpace magazine, about his successful one-man business (he is writer, artist, and publisher) of role-playing books.
By the way, readers of this blog and eReaderJoy will know him as commerter Ganesha Games.
I've also been a fan of his art since the nineties, I've bought watercolors for myself, and illustrations for my sites.
It seems that his gaming business, like my own biz, came about "accidentally", when something he made for fun became successful. I think that's a grand ol' way to get a business.