An essential decoration of a room hugely depends on its size and shape and mostly the purpose for which it is going to be used. Living room decoration can be either an easy task or a complicated one depending on the people that are going to use it. Easy if it is going to be empty for most of the time except when the family is at home; complex if a lot of entertainment is going to take place. But that does not mean that it should not be the opposite also. It hugely depends on the person who is going to decor it. Another complication would be if a constant stream of children and pets are going to be traversing the room.
Your living room will be a place for family or friends to sit and visit, so a notable effort should be created to make a comfortable harmonious environment. Normally this is the first room you see upon entering your home, it is also a room that must show well and in most cases carry more than one function such as a playroom, office and even a dining room.