Douglas Smith makes a living painting places and people he’s never seen. The 30-year-old travels the globe via the Internet, falling in love with imagery from foreign cultures that he reinterprets and incorporates into his canvases. First Thursday-goers, for example, are familiar with the vibrant paintings of monks smoking or skipping that the prolific painter sells for no more than $20 in his booth.   (“I want to give everybody the chance to buy original artwork at an affordable price,” he says.)