Art Stars, keep 'em coming. We've got CASE's talk he did in Berlin last week - he talks about his work, step-by-step, and throws in some feel good tips. One of the biggest photo-realist style graffiti artists in the world right now, CASE has exhibited in major cities like New York, London and Berlin. He's another mentor that's been picked for Art Stars. Get on it, the closing date for entrants is creeping up...