If your writing has been "slammed" by a teacher or peer, it is important to separate the critique from your identity as a writer.
Use the The Writing Practice to turn criticism into a living document for improvement. To Anyone Who's Been Slammed by a Writing Teacher
If your goal is to "slam the exam" or create a high-impact persuasive piece, focus on urgency and clear takeaways.
Avoid a "cookbook" style (e.g., "He did A. Then B happened.") by weaving in the character’s thoughts and feelings during the action.