To start writing ahs oc fanfiction, immerse yourself in the world of AHS. Take notes on the themes, settings, and character dynamics of the season you're interested in. Let's say it's 'Roanoke'. Create an OC that fits into that world, perhaps a local who has always been curious about the haunted house. Develop their relationships with the other characters. You can start with a scene where your OC hears rumors about the house and decides to investigate. Then build the story from there, adding twists and turns as your OC uncovers more about the horror within.
First, know the 'American Horror Story' universe well. Watch all the seasons you want to base your OC in. Then, create your OC. Decide on their appearance, personality, and backstory. For example, if it's for 'Hotel' season, your OC could be a vampire hunter with a tragic past that led them to hunt vampires. Next, think about the plot. How will your OC interact with the existing characters and the setting? You can start with a simple idea like your OC checking into the hotel for a specific reason and then things start to go wrong.
Chapter 424, "He Must Be Very Strong", is the clearest early answer because it turns Chen Fan's situation into a concrete plot event.
Chapter 331, "The Casual Video Went Viral?!", is the clearest early answer because it turns Went Viral's situation into a concrete plot event. The setup is At that moment in the He family., but the pressure keeps building through In the empty room, He Yun stood woodenly at the door, his eyes....
Chapter 413, "This Island is Too Strange", is the clearest early answer because it turns Pan Xing's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Guan Xiong was already a well-known outdoor adventure vlogger on a...
Chapter 513, "A Public Stage", is the clearest early answer because it turns Jiang Shixu's situation into a concrete plot event. The chapter turns that into something concrete by moving from Everyone was sharing their experiences in a few words, the banter...
Chapter 447, "Going Viral on the Internet", is the clearest early answer because it turns Weibo's situation into a concrete plot event.
Chapter 323, "This Person Has Ulterior Motives", is the clearest early answer because it turns Zhang Cheng's situation into a concrete plot event. The chapter gives readers a real answer by opening on There's such a nuance to all this?!
Chapter 652, "He's Gu Shengrong's Grandson?!", is the clearest early answer because it turns Fu's situation into a concrete plot event. Early on, The propellers lifted off again, and Team Q was already on their way....
Chapter 573, "You Are Already Ugly Enough", is the clearest early answer because it turns Sister Yue's situation into a concrete plot event. The chapter turns that into something concrete by moving from Social work was the major I switched to for balance, my minor is in...
Chapter 586, "She Just Likes Men Who Show Weakness Initiative", is the clearest early answer because it turns Jiang Yan's situation into a concrete plot event.