My most favorite detail in the Room of the Week is very subtle, but adds so much to the room. Do you see the teal lines created in the edges of the glass shelves? They are so craftily carried into the room by the lines created by the doors on the wall-mounted cabinet. And then subtly carried into the fabric used for the drapery panel. It is a very small little detail that creates a lot of rhythm in the room.
Can you find a subtle motif in your own house that you could carry into the room in other ways to add rhythm? It could be a line (like this room), a color from a piece of art, a pattern in a textile in the room, a simple architectural detail, etc.