"Well, time to start practicing that. Use different layers. A wall of thorns for example, over a wall of grating, over bricks, etc. Build it and keep it up at all times, so that it becomes unconscious." Now Loki let a half-smile come to him. "The other thing I can think of, is to perhaps focus intently on something else before you sleep. Tell yourself a story, make something up, but focus on elements of it so intently that they show up in your dreams. So that you're choosing what people see, not just letting it happen randomly."