Our advice for decorating young girls’ bedrooms is that they need to be practical, yet cozy at the same time. Having a desk is not a bad idea considering that your teenage girl will do homework in her little crib. Also make sure there are plenty of cabinets or shelving systems where she can hang her stuff — there’s a saying that you can never have too much storage space, even if we’re talking about a girls’ room. And lighting is important as well, she’ll need plenty!