Brian Vincent’s “Make Me Famous,” his documentary about the East Village art scene in the 1980s, is a prime example of an idea that evolved into something completely different than originally planned. A Juilliard-trained actor who wasn’t around the East Village in the 80s, Vincent “got excited about the era through books (including Cynthia Carr’s ‘Fire In The Belly’) and was looking for an excuse to meet some of the people about whom he read. W…