Often the area under the sink needs organizing and cleaning.
In some cases, old curtains do more harm than good. Bookshelves add a warm touch to a room, but be sure that they are not overloaded. Clear everything out, and have just a few soap boxes visible. The foyer should be clear of shoes, coats, or excess items on the walls.
Add flowers on the porch or in beds if weather permits. Remove any toilet brushes or cleaners that are visible. Clean, paint, and eliminate as many of these as possible.