Consider the event taking place in the narrative. Summarize what took place at the event and then consider why this event had such importance to you. Sketching the events in a storyboard fashion to get an overall feel for the timeline may be helpful as well.
Make an individual sheet or note card for all persons appearing in the narrative. Document their appearance, mannerisms or any other individual characteristics that make these people unique from one another. Being descriptive in the narrative is important as it allows readers to better visualize the people involved.
Document all sensory details that come to mind when reflecting on the events included in the narrative. Sights, smells, sounds, feelings and visual elements are all key descriptors that readers will need to get a picture of the event in their minds as they read the prose.
Reflect on the impact this event may have on your life in the future. Self-analysis and introspection are key elements to include in a personal narrative.
Make a list of these elements: 1) Who 2) What 3) When 4) Where and 5) Why and fill in any gaps that haven't already been covered by the exercises outlined in the above steps.