First, make your bed because it is the main piece in your room. If you get this done first, your room will not look as messy.
Pick up all of the clothes off of your floor and put them on your bed in two piles ; dirty and clean.
These are the clean and dirty piles
Take your dirty clothes and put them into your hamper and put your clean clothes into two piles clothes that get folded and clothes that go in your closet.put your clothes in your dresser and closet.
Now take any food, drinks, glasses, and/ or plates down to your kitchen because nobody likes to see those!
Sweep your carpets in your room to make sure your room is clean.
Clear off all of your counters and / or dressers. And organize your belongings.
Dust off your counters and or dressers so they are dust free and look nice.
If there are messy corners clean them up.
Clean up some bags!