I haven't actually read this specific 'Fall, Little Wendy Bird' fanfiction. But generally, in a fanfiction, it could be about a character named Wendy who is perhaps like a little bird in some metaphorical sense. Maybe she's in a situation where she's falling, either literally or figuratively, like falling from grace or into a new and challenging situation.
One popular little 0 bird fanfiction could be those that explore its adventures in a magical forest. It might involve the little bird making friends with other forest creatures and having exciting escapades.
I'm not sure. It depends on the specific context and source of 'Little Bird'. Sometimes it could be based on real events, but other times it might be purely fictional.
Plan out an interesting plot. It could be a simple story of the little 0 bird's daily life with a twist, or a grand adventure where it has to save its home. Make sure there are obstacles for the little 0 bird to overcome, and a satisfying resolution at the end. This way, the readers will be hooked from start to finish.
One possible plot could be that Wendy is a unique bird - like girl in a magical forest. She is known for her ability to fly higher than any other creature. However, one day she loses her confidence due to a mean comment from another forest dweller. This causes her to 'fall' in the sense that she starts to doubt herself and her flying skills. As she tries to regain her confidence, she meets various characters who either help or hinder her progress.
The moral could be about perseverance. Just like the little bird that rebuilt its nest after the storm, we should not give up in the face of difficulties.
You can try some popular fanfiction websites like FanFiction.net or Archive of Our Own (AO3). They have a large collection of Harry Potter fanfictions, and there's a good chance you'll find 'little0bird harry potter fanfiction' among them.