Make sure your dressers/desks/nightstands are all neat and tidy. They probably take up a lot of space in your room thus if they are clean your whole room would look better.
When organizing your dresser(s), you shouldn't only focus on the top, with maybe jewelery or some small little keepsakes, but you should also clean out the clothes. Take them out and fold them and put different types of clothes in sections.
When organizing your desk(s), you should throw away some worthless papers and such before you start to clean. If your desk has sections or cabinets where you can put things in, then you can take some things from the top of the desk and put them in the cabinets. Then arrange the top your way.
When organizing your nightstand, don't make it overflow. Take some things off of it and put them in other places in your room. One way to have your nightstand is to have 1 or 2 books on the side stacked up, your lamp, a small teddy bear, and your retainer (if you have one).
Color code your closet! This may take a while, but it's worth it! Start with darks to lights - maybe black to white or navy to pink. You will have to take everything out of your closet and set it on your bed or the floor. You may need some extra hangers, just in case! Start putting clothes in, one at a time. It takes a lot of effort but when you finish, you'll be proud and it will be easier to find clothes in the morning.
Organize your jewelery! A jewelery box could always come in handy - you don't need an expensive one to make it work, don't worry! Put the necklaces in first - try to separate them so they don't get tangled. If your jewelery box has hooks, then put the necklaces there. Then put in bracelets. Then rings - rings should go in the special little compartments that look like bridges. If you want, you can put the earrings in the jewelery box but I would recommend getting a special earring organizer.
Make your bed! Your bed should always be nice and smooth. Some people make their bed when they wake up - I would recommend doing that to keep your room clean. Take off the sheets and comforter, and if you have stuffed animals, take those off too. Then put the sheets and comforter on, sheets going first. Then you can make a row of stuffed animals on the side. Put your pillow(s) down and you're done!
Finally, clean up the floor! The rest of your room may be clean, but if the floor is a mess and nobody could walk, your room surely isn't clean. Pick up those clothes and put them in your dresser/closet or if they are dirty, put them in the laundry pile. Take the papers and either throw them out or put them in your desk. Take that jewelery and put it in your jewelery box. Put the extra stuffed animals on your bed. Your room isn't clean until you can walk in it.
5 TIPS ON HOW TO CLEAN YOUR ROOM AND KEEP IT ORGANIZED - This article gives 5 tips on how you can clean your room and make sure it stays neat and tidy. Enjoy!