You spend lots of your time while being in living room, hence it becomes significant that you decorate it very carefully and reflecting your taste and personality. Whether you have an inclination towards modern or traditional décor, many principles are coherent with any kind of successful design. You can either make few delicate changes or can completely redo living room trying out some fresh ideas of interior design.
Use one accent wall like this room, as one focal point of your living room. For highlighting it, you can try some designs on this wall like in this room; they have designed this wall using square blocks. A fireplace in this wall is also one of the focal points in this room. Large windows in this room are giving it a big room feel. You should reinvent your old furniture by delving into its details like adding slipcovers to it. Make use of natural light as much as possible during daytime and in the night make use of lamps and accent lighting.