Think about the characters you want to focus on. If you're doing a Charmed and 'The Vampire Diaries' crossover, consider how the Charmed Ones would interact with the vampires and witches in Mystic Falls. You can start by writing a short scene where they first meet. Maybe Piper accidentally freezes Damon when he tries to be flirty with her, and that sets the tone for their relationship throughout the fanfic. Then build the story from there, adding more characters and plot twists as you go.
Begin with a strong hook. For a Charmed crossover with 'Doctor Who', you could start with the Doctor landing in the middle of a Charmed Ones' spell gone wrong. This immediately grabs the reader's attention. Then, introduce the main conflict. Maybe an alien race is interested in the power of the Charmed Ones' magic and the Doctor and the sisters have to stop them. As you write, make sure to keep the voices of the characters true to their original shows.
First, you need to be really familiar with the 'Charmed' series. Know the characters, their powers, and the overall lore. Then, choose the other element you want to cross it with, whether it's another show, a book, or a specific mythology. After that, come up with a basic plot idea that combines the two worlds in an interesting way. For example, if you're crossing 'Charmed' with 'Harry Potter', you could think about how the Charmed Ones would interact with Hogwarts students and teachers.
First, you need to be familiar with both the original 'Charmed' and the reboot. Know the characters, their powers, and the overall tone of each. Then, think of a simple concept like a shared magical item that could bring the two universes together.
To start writing a coop charmed fanfic, you should re - watch some of the Charmed episodes to get a feel for the characters' personalities and how they interact. Then, come up with a unique plot idea that focuses on cooperation. Maybe it could be about the sisters working with a new ally they meet. You can also create some new magical elements that are specific to your fanfic to make it more interesting.
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.