You need to write* a short story.
You also shouldn't be asking for ideas, you already have them. Perhaps you could relate it to your life and turn it into fiction? Suppose you ate grapes for lunch, write a mighty adventure about how the grape goes on an adventure. Don't tell me you can't think of a story either because you can, you are just preventing yourself and refusing to do so. If there is something stopping you from writing, don't let it stop you, just ignore em'. Don't even worry about grammar, don't even worry about whether it will suck or not because the rough draft will. Thank God the audience doesn't see the first draft because it won't turn out to be a spectacular story on the first try. If it does, God bless you, but I suggest you reread for any mistakes if you think you get it correct on the first try.
