Texture before colour
At handover it is easy to keep choosing safe neutral finishes — a beige sofa, a beige rug, pale curtains — and still wonder why the room feels flat.
Usually the missing piece is not another colour. It is contrast in texture.
Within one palette, try combining something soft (linen, wool, upholstery), something with grain (walnut or oak), something with weight (stone or ceramic) and something that catches light quietly (aged metal or textured glass).
These materials can sit in the same quiet palette and still make the room feel layered.