Paint your room with light airy color. Dark colors make a room look small and cramped while light colors create an illusion of space. Stay neutral. They are very easy to work with and can be a great choice if you are unsure of what color to select. To wow the room, accent colors can be used as complimentary colors. They can be used in throw pillows, curtain trimmings; use in small quantities to lift or give a wow factor to your color scheme.
You would probably want to consider an area rug of sorts. This can add ambiance and serve as the focal point of your room. What kind of rug should you invest in? You may want to select something that would give a lively and dynamic effect to the entire room. If you want it to be under a furniture such as a coffee table or center piece make sure that the rug should be slightly larger than the area of the item that covers it.
Sketch a floor plan of your room. Create several sketches and arrange the furniture. Sometimes you can make a room look spacious just by how you arrange your furniture.
Make use of your walls and install simple designed shelves to avoid cluttering up your room. Paint shelves with the same color of your walls to hide it. Avoid too many home decors hanging your walls. Too many of them make your walls look cluttered, thus making your room appear smaller. Organize and keep your room clean. The less clutters you have the more space you'll be able to enjoy.
Poorly lit room will give an illusion of smallness whereas a room with a lot of natural or even artifical light will appear to be spacious. The more light to the room, the better. You may also want to invest with spotlights to highlight objects.
Installing mirrors in a wall can visually double the size of the room.