Less is more. The most important rule to remember when decorating any room is don't clutter. Less really is more. Choose simple pieces and keep the extras to a minimal. What decorations you do use don't over do it but rather select a few quality items.
An important decorating area that you must work on when decorating your room are your walls. You can make even the plainest walls look nice by incorporating great wall art and decorative accessories. Try adding simple plain artwork tribal masks or abstract art to your living room walls to highlight the modern feel of your contemporary theme.
Firstly you need to choose the colour palette you want to work with. Calming colours are always a good choice such as pastels and neutrals. Choosing these colours will also make it easy to match furniture and other elements together in the room. Remember simple is always best.