To begin, obviously, you need to select your rug. Select one with a minimum of 4-5 colors for the best results. Orientals are particularly well suited to this technique because of the number of colors they contain, but modern rugs can work as well. (And by the way, orientals can look amazing in contemporary spaces!) For most rooms, an 8x10 is the most appropriate size for a seating arrangement or bedroom, or 6x9 in small spaces.