The more themes you incorporate, the more creative you will have to be but the process is basically the same. It will likewise depend how similar or different the themes are. Combining some themes such as an Asian theme and Zen theme would be easier than a Zen theme with a rock-star theme. The primary task here is to identify the common consider the living room ideas. For instance, in combing an Asian and Zen theme, you should incorporate a more natural Asian representation like bamboo, jade and the idea of feng shui. You can also incorporate meditation cushions that would be used in Zen lifestyle and simultaneously represents a classic Asian seating arrangement.