By using light curtains, allow more light to enter the living room. Instead of using heavy looking "valances" use basic and if possible semi transparent curtains that are only enough to reduce glare which might be caused because of sunshine. Use brighter color schemes commonly known as "hot" color schemes. These create a very good transmission and reflection of natural as well as artificial light inside the living room. There is certainly one more different method to defining the perception of the living room (or any interior space) and that's the empty volume left behind after all the furniture together with other accessories have been fitted. Because anything in your living world is definitely "relative". The perceived volume is always relative to the empty volume that is definitely normally used for circulation. The more empty volume you get, the bigger the room will look.