I'm not sure who the 'best' is as it's subjective, but some popular authors in the fanfiction community might be those who have a deep understanding of Arianne's character. They would be able to write her as a strong, independent woman who is true to her Dornish roots.
Authors who are good at world - building within the 'Game of Thrones' universe are likely to create great Arianne Martell fanfiction. They can expand on Dorne's culture and politics, making Arianne's story more immersive. For example, an author who describes the beautiful palaces and deserts of Dorne in detail while also weaving in Arianne's political maneuvers.
In a fanfiction, Arianne Martell might receive a mysterious gift of lemons. This could lead her on a journey to discover who sent them and why. Along the way, she could encounter various characters from the Game of Thrones world and have to use her wits, which lemons could symbolize in some way, to solve the mystery.
She could find a lemon tree in a hidden garden and it could be a sign of hope in a dark time. For example, in a time of war and political unrest in Dorne, the lemon tree might be the only thing thriving, and Arianne could draw strength from it.
One interesting Arianne Martell fanfiction could be about her journey to claim the Iron Throne on her own terms. Maybe she forms unexpected alliances with other minor houses in Westeros.
A great Arianne Martell OC fanfiction idea is one where an OC is a mysterious assassin sent to Dorne. Instead of fulfilling their mission, they are swayed by Arianne's charm and her cause. They then use their skills to protect Arianne from her enemies within and outside of Dorne, and together they rewrite the fate of Dorne in the Game of Thrones.
An OC can impact Arianne's character development by being a role model. For example, if the OC is a fearless warrior, Arianne might learn to be more assertive in battle or in political negotiations. This could make her a more formidable leader in Dorne.
One great fanfiction could be 'The Lost Queen of Dorne'. It delves into Elia's life before the tragic events in the series. It shows her as a strong and intelligent woman, full of grace and dignity. This fanfic gives more depth to her character, exploring her relationships with her family and her hopes for the future of Dorne.
There is a fanfiction called 'Oberyn's Quest'. It follows Oberyn on a journey across Westeros where he uncovers some long - forgotten secrets. The story does an excellent job of staying true to his character, his determination and his cunning nature, making it a great read for Oberyn Martell fans.
You can start by looking on fanfiction platforms like Archive of Our Own (AO3). It has a large collection of fanfics, and you can search specifically for Arianne Martell OC ones. Just type in the relevant tags in the search bar.
There are many great authors in the Bran fanfiction community. One of them might be a writer named 'WinterBran'. Their stories often focus on Bran's growth and how his new powers affect his personality. They do a great job of showing his internal struggle between his human side and his role as the Three - Eyed Raven.
There are also those who write crossovers involving Margaery Tyrell. For instance, an author who combines the 'Game of Thrones' world with another fantasy realm and still manages to keep Margaery's character true to her original self can be considered a great author of her fanfiction. However, it's really up to individual readers to decide who the best is based on their own preferences.