Find the back and front labels of the sofa cover. Some sofa covers may also have positioning stickers located on the arms of them as well.
Cover the sofa loosely with the sofa cover. Start from the top center and then move it to all sides of the sofa.
Stretch down the sofa cover so it is touching the floor. Fix the back and arm areas of the sofa so it goes along with the shape of your sofa.
Place the sofa cover on both the arms of the sofa so they are snug and look neat. If there is any extra fabric around the arms, tuck that in.
Fit the sofa cover snugly, working from the inside area of the arms. Then work your way to the back of the arms until there are no wrinkles. Tuck extra fabric in the creases while you work all around the sofa so it looks neat and there are no wrinkles.