When starting a crossover supernatural fanfic, first decide which other universe you'll be crossing with 'Supernatural'. Let's say it's 'Good Omens'. Research both universes deeply. In 'Good Omens', there are angels and demons with their own motives and behaviors, while in 'Supernatural' there are hunters and various supernatural beings. Next, develop a concept that links them. For example, a prophecy that involves both the apocalypse in 'Good Omens' and the end - of - the - world scenarios in 'Supernatural'. For the actual writing, start small. Maybe begin with a conversation between a character from 'Supernatural' and one from 'Good Omens'. As you progress, build up the story, introduce more characters from both sides, and gradually unfold the larger plot that combines the unique elements of both universes. Also, don't be afraid to add your own twists and interpretations to the existing lore of both universes.
First, you need to choose the two (or more) universes you want to cross over. For example, if you choose 'Supernatural' and 'Harry Potter', study the lore of both. Know the rules, the characters, and the settings. Then, think of a plot that would bring these universes together. It could be something like a magical artifact from the 'Harry Potter' world that has fallen into the 'Supernatural' world and is causing chaos. Next, start with an engaging opening. Maybe introduce a character from one of the universes in a situation that is related to the crossover plot. For instance, if it's a 'Supernatural' and 'Stranger Things' crossover, you could start with Dean Winchester arriving in Hawkins, Indiana, because of some strange energy readings that remind him of supernatural events.
First, decide which two (or more) shows/franchises you want to cross over. Then, research the lore of both. For example, if it's a Supernatural and 'Charmed' crossover, learn about the magic system in Charmed and how it differs from Supernatural's magic and hunting. Next, create a central conflict that involves both universes. It could be a powerful entity that threatens both the magical world of Charmed and the monster - hunting world of Supernatural. Then, introduce your characters. Maybe the Halliwell sisters meet the Winchesters in a small town where strange things are happening.
First, you need to be well - versed in both shows or universes you want to cross over. Know the characters, their personalities, and the rules of their respective worlds. For example, if you're crossing 'Supernatural' with 'Shadowhunters', understand how magic works in each. Then, come up with an interesting plot that would require the characters from both to interact. Maybe a powerful demon in 'Supernatural' is related to a dark magic in 'Shadowhunters' and the characters must work together to stop it.
First, choose the fables you want to cross. Then, think about how the characters from each fable would interact. For example, if you choose 'The Ant and the Grasshopper' and 'The Fox and the Grapes', you might start with the grasshopper meeting the fox while looking for food. Just start writing down these initial ideas.
First, decide which universe you want to cross Monika into. It could be a game, a book, or a movie world. Then, research that world thoroughly. For example, if it's a 'Monika in the Star Wars' crossover, learn about the Force, the different species, and the political systems in the Star Wars universe.
First, decide which world you want to cross Elsa over with. For example, if it's the world of Narnia, think about how Elsa's powers would interact with the magic of Narnia. Then, create a plot. Maybe Elsa is called to Narnia to help the Pevensie children fight the White Witch. Just start with a simple idea and build on it.
First, decide which other show or universe you want to cross over with. For example, if it's 'The Office', think about how the characters from 'Seinfeld' would fit into the Dunder Mifflin office environment. Then, come up with a basic plot idea. Maybe Jerry has to give a comedy workshop to the office employees.
First, decide which universe you want to crossover with. Then, study the lore and characters of both Twewy and the other universe. For example, if it's a crossover with Pokemon, understand how Pokemon battles work and how the Pokeballs function. Then, think of a plot that would bring the characters together in a believable way, like a strange portal opening between the two worlds.
First, decide which other universe you want to cross 'HxH' with. Then, study the lore and characters of both universes thoroughly. For example, if you choose 'My Hero Academia', know the quirks of the 'MHA' characters and how they interact with the Nen abilities in 'HxH'. Next, come up with a basic plot like a common threat that both universes need to face together.
Begin by creating an outline. Outline the main plot points, like how the characters will meet, what their initial reactions will be, and how they'll overcome their differences to fight the common foe. If you're doing a Trollhunters and 'Lord of the Rings' crossover, you might start with the Trollhunters being transported to Middle - earth. Outline how they'll interact with the hobbits, dwarves, and elves. Then, start writing your first draft, don't worry too much about making it perfect at first.
First, decide which other universe or story you want to cross the Akatsuki with. Once you've made that choice, research both the Akatsuki and the other world thoroughly. Then, come up with a basic plot idea. For example, if you're crossing with 'Harry Potter', maybe the Akatsuki are after a powerful magical artifact in Hogwarts. Next, create some initial character interactions. How would Sasori react to seeing a wizard use magic? After that, start writing your first draft, don't worry too much about making it perfect at first.