Create an engaging plot that combines elements from both. Maybe have Geralt on a quest to find a lost artifact in Middle - earth that has some connection to his own world. This way, you can bring in the unique elements of both universes. Also, don't be afraid to let the characters grow and change as they interact with the new environment and characters from the other universe.
When creating the plot, find a good balance between the two worlds. Don't make it too Percy - Jackson - centric or too LOTR - centric. Maybe start with a problem that can only be solved by the combined efforts of characters from both series, like a new threat that needs demigod and LOTR hero powers to defeat.
To write a good vampire Lord of the Rings crossover fanfiction, you need to focus on character development. If you're introducing a vampire lord, make him a complex character. Give him motives that are more than just 'I want to rule the world'. Maybe he has a tragic past that led him to his current state. Also, make sure the language you use fits the tone of both worlds. The Lord of the Rings has a very specific, almost archaic style of speaking in places, and your vampire characters should also have a voice that is consistent with their nature. And don't forget about the pacing. You don't want to rush the story, especially when it comes to the big moments like battles or revelations about the ring.
First, do your research on the lore of Middle - earth. Know how dragons are typically portrayed in Tolkien's works. For example, Smaug was a very greedy and powerful dragon. Then, create a unique backstory for your original character (OC) dragon. What made it different from other dragons? Maybe it has a different origin or a special power.
First, you need to know both universes well. Read the books of 'Lord of the Rings' and watch the 'Avengers' movies multiple times. Then, think of an interesting concept for the crossover. For example, a magical object from Middle - earth getting into the hands of an Avenger. Next, focus on the characters. Make sure their personalities are consistent with their original versions. Don't just throw them together randomly.
It could be really exciting. Imagine Geralt of Rivia in Middle - earth. He might face off against orcs instead of the usual monsters. His magic and sword skills would be a great addition to the battles in Middle - earth. And his moral ambiguity could create some interesting storylines when interacting with the more 'good - versus - evil' nature of 'Lord of the Rings' characters.
First, you need to have a solid understanding of the LOTR lore. Read the books, watch the movies. Then, come up with an original idea. For example, you could focus on a side character's adventure during the main events of the War of the Ring. Decide on the animation style in your mind, whether it's a more cartoonish or a more realistic - looking one.
To write such a fanfic, you could take the serious themes and turn them on their head. For instance, have the powerful magic items malfunction or have the epic battles end in absurd ways. Just let your imagination run wild and have fun with it!
First, study Arwen's character in the original books and movies. Notice her mannerisms, her speech patterns, and how she interacts with other characters. Then, come up with a unique plot. It could be something like Arwen going on a solo adventure to save a lost elven artifact. This would be different from the main story and give you a chance to develop her character further.
First, know the source material well. Understand the characters, their motives, and the world - building of both 'Game of Thrones' and 'Lord of the Rings'. Second, create unique and interesting crossovers. For example, how would the One Ring affect the power struggle in Westeros? Third, focus on character development. Let the characters grow and change in new and unexpected ways.
In some fanfictions, technology might be introduced in a way that doesn't disrupt the magic of Middle - earth. For example, dwarves could use advanced mining technology that still has an old - world charm. It could be like steam - powered devices that work in harmony with their forges.