If you are writing in 1st person, try to put yourself in the character's shoes
Try to describe what you would see, smell, taste, feel, and hear if you were in the story
Use figurative language: "As white as snow" (simile) or "Taller than 100 giraffes stacked on top of each other (hyperbole)
Really dive deep into the writing + make sure it tells a story
You could end on a cliffhanger and let the readers imagine what happens next (just make sure the main conflict is solved or else your story is incomplete)
For example:
Here is a little summary of a story that I thought of. I tried to make it as vague as possible so that you can use the advice I gave you above to make it your own. I hope this can inspire you to write a great story :)
Weird things have been happening in a neighborhood. A group of kids investigate to find out who is causing all of these strange things to happen. They go to a park to write down all their findings. While at the park, the see something in the sky, but realize it was just a kite. They finally figure out that an old lady at the end of the street is really a witch and has been making odd things happen. The kids confront her, but nothing changes. The story seems to repeat itself, word for word. Then, the kids go to the park again. They all look up into the sky, but instead of seeing a kite, they see a broom flying off into the distance. The unmistakable cackle of a witch can be heard.