The writing style and tone could make it distinct. If the author of 'blue bloods a perfect oc fanfic' has a more humorous or darker tone compared to other fanfic writers in the 'blue bloods' fandom. The way the story is told, whether it's through a series of flashbacks or a very linear narrative, can also set it apart from other fanfics. And perhaps the author has a different interpretation of the 'blue bloods' lore, which is reflected in how they develop the OC and the overall story.
One idea could be to focus on Frank's backstory before he became the Police Commissioner. Explore his early days in the police force, the challenges he faced, and the relationships he built. This can add depth to his character in the fanfic.
Well, I haven't actually read this 'blue bloods a perfect oc fanfic' myself. But generally, in a good fanfic, the development of the original characters (OC) can be a great part. If the author has created a really interesting backstory for the OC and integrated it well into the 'blue bloods' universe, that would be a highlight. Maybe the relationships the OC forms with the existing characters in the 'blue bloods' world are also well - written, like interesting friendships or rivalries.
There could be a fanfic that delves into the backstory of one of the Reagan family members, like Erin. It could tell the story of how she decided to pursue a career in law and the challenges she faced along the way. This would give more depth to her character in the Blue Bloods universe.
One popular theme is the development of Jamie's character. Writers often explore his growth within the family and the police force. Another theme could be relationships, like his romantic relationships or his bond with his siblings. And of course, there are often themes related to solving crimes in the context of the Blue Bloods world.
One great Erin OC fanfiction is 'A New Beginning for Erin'. It delves into the character of Erin with a new original character added to the mix. The OC brings out different aspects of Erin's personality as they work together on cases. It's a really interesting read that gives a fresh perspective on Erin's story within the Blue Bloods universe.
To write a great Blue Bloods OC Fanfiction, you need to be consistent with the show's canon. Don't go against the established facts about the characters and the story world. Your OC should fit into this world organically. Also, focus on character development. Let your OC grow and change throughout the story. And don't forget about the dialogue. Make it sound natural, like how the characters in Blue Bloods talk. For instance, if you're writing a scene with the Reagan family, capture their family dynamic through the dialogue.
To start writing a Blue Bloods Jamie OC fanfic, it's essential to do some research. Not only on Jamie but also on the overall world of Blue Bloods. Know the rules of the police department in the show, the family dynamics, etc. When creating your OC, give them a unique backstory. This will help in developing their relationship with Jamie. For example, if your OC has a troubled past, how will Jamie react to it? Outline your story before you start writing. Decide on the beginning, middle, and end, and think about how the relationship between your OC and Jamie will evolve throughout the story.
You could check out fanfic platforms like Archive of Our Own. There are often some great 'Blue Bloods Daughter' fanfics there. Just search for the relevant tags.