There's some people on this page trying to speak for LuVisi, by saying that he "DOES NOT" use references... I'm about 98.9% sure(and would bet my rent money) that he does... we all do, in one way or another. It's just the way it is, and it doesn't make you any less of an artist admitting you do. It's just another tool in a wide array of arsenal we use. Shit, artists have been using them since the beginning of time.
It still takes a butt-load of talent to get your stuff to look as real as Dan's does... trust me.