I think a good way is to think about what kind of personality traits Baby Hiccup would have and build the story around that. For example, if he's particularly brave or mischievous, and how that affects his dragon-training journey.
Hiccup might stumble upon the baby during one of his adventures in the wild. Maybe he hears cries and follows the sound.
Well, in many fanfictions, the baby of Hiccup and Astrid brings new challenges and joys. Sometimes, the baby inherits their parents' bravery and spirit. But it varies a lot depending on the author's imagination and the story's direction.
First, think about what kind of personality you want baby Hiccup to have. Then, create unique adventures for him that are in line with the How to Train Your Dragon world. Maybe he has a special bond with a rare dragon or discovers a hidden dragon cave.
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.
Hiccup in the fanfiction typically trains by forming strong bonds with the dragons first. He shows them kindness and respect, and then gradually introduces training exercises that are fun and challenging for both him and the dragons.
In such fanfiction, Hiccup being half dragon often leads to unique adventures and challenges. His mixed heritage might give him special powers or put him in conflict with both human and dragon societies.
Well, for a godlike Hiccup fanfiction, focus on giving him unique and powerful abilities. Maybe he can control elements or has super strength. Then, create exciting challenges and conflicts for him to overcome using his newfound powers.
In this fanfiction, Hiccup being a god might give him extraordinary powers and new responsibilities. It could lead to exciting adventures and challenges.
In many fanfictions, Hiccup's wheezing might be explored as a result of intense battles or a new health issue introduced by the author's imagination.
Well, it varies in fanfiction. Sometimes Hiccup is written as a warrior, with new adventures and challenges that test his fighting skills. Other times, the focus might be on different aspects of his character development.