Ha! First rule of fanfiction: Never read your stories too many times.
At least, that's the rule I've come up with. If I read my stories that I wrote too many times, they start to sound awful no matter how good they started out looking. An author once said, "Never go back to read the story you wrote. You'll think it's awful." I used to answer, "Then how will I edit it?"
Anyways, you could write about how Spitfire crashes onto Applejack's farm. Unfortunately for Spitfire, Applejack hates because (Yadda yadda backstory backstory) and refuses to help her. Applejack warns others not to help her but Fluttershy starts to secretly help her on the side. She gets caught (Yadda yadda) happy ending.
I'd never write something this emotional.