Probably the easiest and most affordable makeover idea for your old sofa is to buy new throw pillows. By doing this you can transform the look of the sofa as well as the general ambiance of the room. You could go with bold colors or even floral patterns to add some character.
Fill Saggy Cushions
If your sofa looks kind of saggy, the best way of improving its appearance is by refilling the cushions. The best way of doing this is by wrapping the cushion with a generous layer of foam wrap or quilt batting and placing them back into the sofa covers.
Believe it or not, switching your sofa legs can actually give it a new look. Many sofas actually have screwed on legs that are easier to replace. If you are unable to change the legs, you can simply paint the current ones to give a new look.