Developing a story in 150-200 words can be a bit of a challenge especially when it has do with a beginning, a middle and an end.
The trick is to arrange those words in order to make it pleasing to the eyes, ears, brains, emotions and imagination for any reader or listener to find it interesting and aesthetically beautiful.
Therefore, you need to get started with
For choosing a subtitle, REMEMBER, it's the hook , it should cause the reader to stop and read the story.
It must be compelling and catchy. But, DO NOT make the title give so much information away about the story itself.
Read more about developing a story here; https://brainly.com/question/2427051