What is a one-sentence summary of the following article?
The theme of your room can be just about anything, from a fairy princess theme to an underwater theme. If you don't want to go too crazy with a theme, just pick a color theme consisting of two or three complementary colors.  If you need some help choosing colors that go well together, you can try consulting a color wheel. Depending on how much contrast you want, you can choose colors that are near each other or across from each other on the color wheel.. You can also choose a colorful piece of fabric or art to inspire your color choices for the rest of the room. Keep your theme in mind when purchasing and repurposing items for the room. Everything doesn't have to match perfectly, but it should all coordinate. Before you overhaul the room, take a minute to think about what is and what is not working for you. For example, if you have no place to study in your room, you may want to consider adding a desk. If the room feels claustrophobic, you may want to remove some furniture.  Measure the room so you will know exactly how much space you have for new pieces before you buy them. You should make sure you have enough room to comfortably walk around each piece and open all doors and drawers. It's a good idea to keep these measurements written down somewhere or stored in your phone so you can consult them if you find a piece of furniture you like. and assess your storage needs. Clutter can keep your room from looking the way you want it to, so find a way to minimize it.  Donate clothes and other items you no longer use to a local thrift shop. You can also try  selling some things online or at a  consignment store if you want some extra money to spend on your room. Once you've gotten rid of everything you don't need, determine if you still have clutter, and if so, how to deal with it. You may need to add things like shelves, hooks, a dresser, or a storage ottoman to your room, depending on the kinds of items you need to store. Baskets and canvas bins are also great for making clutter disappear!  You can also rearrange furniture, or clean out the room and store some unwanted items in the attic or basement. This will make it somewhat easier to see what the shape and size the room is.

Summary:
Choose a theme. Keep function in mind. Declutter