Decorating a teens room is always a challenge. What's in and what out? Putting all the colors together, matching up paint, curtains and linen. What do you do first? Pick the paint color or pick the linens?
If decorating more rooms that I can count and I can tell you from experience that picking out the linens and fabric first is always the easiest way to go. Home Depot and Lowes are very good about matching any colors you want. Bring them a pillow and they can match it.
The hardest part for me is getting the room to the point where both of us will be happy.....that's not always easy.