Use unique locations that are not typically associated with Twilight but still fit the mood. For example, an old abandoned factory that has a lot of dark corners and interesting architecture. Dress the models as Twilight characters and play with light and shadow to create a different kind of Twilight - inspired scene.
She can incorporate personal items. For instance, if she has a family heirloom like a necklace, including it in the photoshoot can add a personal touch. This makes the story more about her and her family history.
Changing the setting slightly can also make it unique. Instead of the typical Hyrule landscapes, you could introduce a hidden area that has its own set of rules and mysteries. Describe how Link discovers this place and how it affects his quest in the Twilight Princess story.
A photoshoot based on the Cullen family's mansion would be great too. You could have the models posed as different Cullen family members. Use a lot of white and silver tones to represent their elegance and vampire - like qualities. Maybe have some red accents to symbolize their diet of blood in a more artistic way.
It can be unique by creating crossovers that are unexpected. For example, having the characters from Inside Out directly interact with the Twilight characters in a way that changes the plot of Twilight. Maybe Riley's emotions get mixed up with Bella's and it causes chaos in Forks.
Set the fanfic in a different world or dimension. Instead of the usual Mushroom Kingdom setting, put them in a steampunk world or a world filled with magic that is different from what we've seen in the Mario games. This change of scenery will make the interactions between Peach and Bowser fresh and exciting. In a steampunk world, Bowser might have a huge mechanical castle and Peach could be leading a group of inventors. Their conflict and potential relationship would be very different from the norm.
You can make it unique by changing the setting. Instead of the normal Naruto or Spiderman settings, create a new world where both exist side by side. For example, a post - apocalyptic world where they have to rebuild society and fight off new threats.
Mixing the lore of both universes in a creative way. Like, if the Halo rings had an impact on the creation of the different Kingdoms in RWBY. This would not only blend the two stories but also give a fresh take on the existing RWBY lore.
Set the reunion in an unexpected location. Instead of Hogwarts or Diagon Alley, have it in a Muggle city. The characters would have to navigate the Muggle world while still using their magic secretly. This would add an element of novelty and humor to the fanfic.
To make it unique, focus on the character interactions. Don't just have the Berserk characters barge into the kingdom and start fighting. Let them form relationships, both positive and negative, with the kingdom's inhabitants. For instance, a Berserk character might fall in love with a local from the kingdom, which could change their perspective and goals.
One way to make your 'nightingale fanfic' unique is by mixing different genres. For instance, combine a historical setting with the nightingale theme. Maybe it's a story set during the Victorian era and the nightingale is a symbol of hope for a young seamstress who is struggling in the slums. You can also play with the narrative style. Use a non - linear narrative or tell the story from the perspective of the nightingale itself, which would be quite different.