If your child is almost teenager you need to start thinking for creating a little more serious place which more closely resembles the one for adults than for children. Consult with your child and work together to specify what wants to have a set. Which old wants to keep and which ones you might want to re-paint or repurpose. In this case all the colorful items you need to change them with new ones in a single color that will give a more serious tones the room.
The organization and storage in teenage room is extremely important. Sufficient number of shelves on the walls, boxes and baskets required under the bed are an integral element. If your child wants something interesting you can provide him cool room in industrial style. It will be great idea and your child will be grateful and happy. Allow your child to create their own taste space where sleep, learn, socialize. His ideas are an important element in building a personality.