To layer Rick Owens pullovers for colder weather, you can try wearing them over a thin, long-sleeved shirt or under a jacket. You can also pair them with scarves or hats for added warmth. To create a more stylish look, consider layering different textures and colors. For example, you could pair a black leather jacket with a gray cashmere Rick Owens pullover and a plaid scarf. Experiment with different layering techniques to find a style that works for you.