Answer the story's central question
The ending can show success, failure, or a mixed result. Let the reader understand what happened to the main goal and what the decisive choice cost. A relationship may change even when the practical problem is solved.
Show a small sign of change
You do not have to explain a moral. A final action can suggest a new attitude: a character who borrowed without asking now waits for permission. An image or object from the opening can return with a changed meaning.
Revise in three passes
First check the chain of events: does the ending grow from the character's decisions? Next check viewpoint and tense. If you tell the main events in the past, keep that timeline consistent and signal deliberate shifts. Finally, read aloud and cut repetition while preserving details that carry emotion.
See it in practice
Starting point
Everything was perfect after that. Mira learned that honesty is always the best policy. The end.
Using this skill
Her friend reached the interview on time, but the bicycle still needed a new wheel. That evening, Mira left her first repair payment on the kitchen table. Beside it lay a note: 'May I borrow your pump on Saturday?'
The practical outcome has a cost, and the final request suggests changed behaviour. The ending lets an action carry the meaning.