To write such a fanfic, begin by choosing the right setting within the 'Blue Bloods' world. It could be at the police station or during a family dinner. Then, create a conflict related to the period cramps. For instance, the character might be worried about showing weakness because of the cramps. Develop the character's internal dialogue to show their thoughts and feelings. Use descriptive language to bring out the pain of the cramps and the character's determination to carry on with their duties in the show. Remember to stay true to the personalities of the 'Blue Bloods' characters.
I'm not sure of specific fanfics about 'Blue Bloods' and period cramps. You could try searching on fanfic platforms like Archive of Our Own. They have a wide range of fan - created content, and you might be able to find something by using relevant keywords in the search bar.
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 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.
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.
Good writing quality matters a great deal. This includes proper grammar, vivid descriptions, and a good flow. If the writing is choppy or full of errors, it's going to be hard for the reader to get immersed in the fanfic world of Blue Bloods.
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.
To develop Frank's character, start by researching his personality traits shown in the show. Then, give him new challenges that force him to grow. For example, a political scandal that threatens his position can make him reevaluate his values.
I'm not sure exactly which specific 'Jamie's shot' in Blue Bloods you're referring to. But if it's about a dramatic moment where Jamie fires his gun, a fanfic could explore the before and after. Maybe it could focus on his internal thoughts right before pulling the trigger, like his fear of harming an innocent or his determination to stop a criminal. It could also show how that event changes his character, making him more cautious or more confident in future situations.