Well, first you need to have a clear plot idea. Maybe have the characters face typical high school problems but with a dragon twist. Also, pay attention to keeping the personalities of the original characters intact.
One way is to search on dedicated fanfiction platforms and filter the results based on reviews and popularity. Also, follow fan communities related to the movie for recommendations.
You could try searching on social media groups or communities related to the franchise. Fans often share and discuss their favorite fanfictions there. Another option is to look for fanfictions that have a lot of positive reviews and comments.
One popular theme is the further adventures of Hiccup and Toothless. Writers often explore new lands and challenges that they might face. For example, they might encounter a new type of dragon with unique abilities.
One way is to search on specific forums or communities related to 'How to Train Your Dragon'. Members often recommend their favorite night light fanfiction there. Also, check social media groups for suggestions from fellow fans.
You could try using specific keywords related to the themes or characters you're interested in when searching. And don't forget to explore social media groups dedicated to How to Train Your Dragon fanfiction for hidden gems.
Well, when Hiccup is a dragon in fanfiction, it could be because of an ancestral connection or a mysterious experiment. This could open up new storylines and allow for exploration of his identity in a completely different way. Maybe it's a way to show his ultimate empathy and unity with the dragon species.