Start with Summary of the Story (discuss a major image, perhaps — or a theme)
After introducing, you should be largely comparative (comparison-contrast),and for your third part (what’s the significance?), you should come up with an analogy (this is like, just like _________, that can be seen when).
As a reminder: Rule of 3 requires you to use examples, followed by details (comparison-contrast, cause and effect) from the story. This will be a relatively long paragraph.