Begin by choosing the right crossover. Let's say it's Negan and 'Harry Potter'. Think about the rules of the 'Harry Potter' world and how Negan would break or bend them. You can start with Negan somehow getting a letter from Hogwarts (maybe a mistake by the owl post). He shows up at the school, and chaos ensues. Write from his perspective as he encounters magic for the first time. His confusion and his attempt to assert his dominance in this new and strange place would make for an interesting start.
Well, start by creating a scenario that brings the Jashin concept into the other story. For example, if it's a crossover with a game world, think about how Jashin's influence could disrupt the game's balance or create new quests. You could also think about the reactions of the original characters to the Jashin - related elements. Maybe they're horrified, or maybe some are intrigued. Then build your plot around these interactions and reactions.
First, choose the two universes you want to cross over. For example, if it's Miraculous and Naruto. Then, think about how the characters will interact. Maybe Ladybug could learn some ninja skills from Naruto. Start with a simple scenario like an akuma attack in a world where ninjas exist.
First, decide which universe you want to cross Chappie over with. For example, if it's "Terminator", research the lore of that universe. Then, think of a plot hook. Maybe Chappie is mistaken for a Skynet creation in the Terminator world. Next, start writing an introduction that sets up the crossover situation.
First, decide which universe you want to crossover with. Then, think about how the Mandalorian's character traits will interact with the new universe's elements. For example, if it's a crossover with Star Trek, consider how his no - nonsense attitude will mesh with the more diplomatic Starfleet officers.
First, decide which two universes you want to cross over. Then, research both of them thoroughly. Know the rules, the characters, and the settings.
To start a Brave crossover fanfiction, think about the theme you want to explore. If it's a crossover with Beauty and the Beast, you could explore the theme of breaking curses in a new way. Merida could arrive at the Beast's castle and think the curse is some sort of dark magic she can fight. Start with a description of the moment Merida enters the castle, her thoughts and reactions, and then introduce how she'll interact with the Beast and Belle as the story progresses.
Begin by brainstorming interesting scenarios. If you're doing an 'It' crossover with a sci - fi story, think about how the otherworldly elements of 'It' like the sewers and Pennywise's powers would work in a sci - fi setting. Decide on your main characters from both universes. Then, create a rough plot outline. You could start with a character from one world stumbling into the other. It's all about being creative and having fun with it.
First, decide which two universes you want to cross. For example, if it's RWBY and the Transformers universe. Then, think about how the characters will interact. Will Ruby befriend Optimus Prime? Next, create a plot. Maybe the Grimm are being controlled by the Decepticons, and the RWBY characters and Autobots must stop them. You can start with an exciting scene, like Ruby seeing a giant Transformer for the first time.
Start by brainstorming the basic plot. Decide if it's going to be a light - hearted or more serious story. For example, if it's light - hearted, you could have Lucifer trying to teach the Transformers about human vices like gambling in a comical way. Then, think about the characters' personalities. How will Lucifer's arrogance play off against the Transformers' sense of honor? Just start jotting down these ideas to form the foundation of your story.
First, decide which other show or universe you want to crossover with Uncle Grandpa. Then, think about how the two worlds could collide. Maybe start with a simple scenario like Uncle Grandpa getting a strange letter from that other world inviting him over. Next, introduce the characters from both sides and let their personalities clash or work together in interesting ways.