Create the illusion of height in your interior.
A very effective but simple way to make a room feel higher is to add a line of colour at the top of the wall meeting the ceiling. This will trick the eye and make it more difficult to tell the point where the ceiling begins. This will work best when painted in the same colour as the ceiling. Depending on the style of your interiors the addition of a picture rail, and or coving, along with this decorating technique can work well to add depth and texture to plain walls.