Marilyn Monroe was an American icon. Even today, more than 50 years after she passed away, Monroe is the gold standard of beauty. So when a tattoo artist is asked to do a portrait of Monroe they know they have to bring their A-game. Kasey Gonzalez, better known as Gonzo, is a master of black-and-grey realism. In this video, you'll watch as he creates a stunning portrait tattoo of Monroe while telling us what makes a solid black-and-grey tattoo.