Okay, I can't write it for you but I can give you some advice from a writer.
Step 1. Brainstorm. Pick a topic and just spill all your ideas onto a page, there doesn't have to be any organization. Make sure that when you choose your topic it's something that you would actually and enjoy, that will make it a lot easier to write.
Step 2. Once you have your topic and some ideas on how to develop it, start to organize your thoughts into paragraphs and label them with the appropriate progressions: the exposition, rising action, complicating incident, climax, and a resolution.
Step 3. After you've written your outline, you just have to jump in and start writing. If you went in with a strong enough plan and stick to it, then your story should come out fairly well.
Step 4: Final draft, make sure that all the requirements have been filled. Don't forget to put it into a grammar/spelling checker to make sure there aren't any mistakes. After you are finished, read it out loud to yourself or put it in a text reader so you can hear it aloud.
And you're done! I hope this helps, if you need any more assistance feel free to message me.
