do not change anything else in the room keep the entire design layout furniture colors lighting materials and proportions exactly as they are make all the wood throughout the room the same exact shade a dark neutral brown that is neither warm nor cool with a consistent natural wood finish add a few children s books and a small amount of tasteful kids d cor to the existing shelves keep it minimal neat and elegant with plenty of empty shelf space the decorations should feel subtle and age appropriate not cluttered only make these changes and leave everything else completely untouched