Notorious forger John Myatt reveals the secret to creating a convincing fake masterpiece: “You ‘hypnotise’ the original painting, look at the canvas, the thickness of the paint, the way it’s presented. The rule applies to anyone from Rembrandt to Picasso, just learn to look at the original, stand in front of it… Then I’ve got into my car with my mental file of it in my head, so I can get home and start working on it.”