Writing a 'Trollhunter' fanfic is all about creativity. You need to immerse yourself in the 'Trollhunter' world. Think about what elements you love the most about it, whether it's the troll designs or the concept of the Trollhunter. Start with a strong hook to draw readers in, like starting with an intense battle scene. Develop your plot around conflicts, such as internal conflicts within the Trollhunter or external ones like battles with new enemies. Create dialogue that sounds natural for the characters. You can also add some mystery to your fanfic, like a hidden treasure or a secret identity. Finally, revise your fanfic to make it flow well and be enjoyable to read.
To write a 'Trollhunter' fanfic, begin by choosing a theme. It could be about friendship in the Trollhunter world, or about the struggle between good and evil. After that, plan out your story structure. Decide on the beginning, middle, and end. For the characters, study how they act in the original and then add your own twists. For instance, if there's a timid character, you could make them brave in your fanfic. When writing, use vivid descriptions to bring the Trollhunter world to life. And don't forget to proofread your work to correct any grammar or spelling mistakes.