To start writing Tortall OC fanfiction, study the world of Tortall. Know the different kingdoms, the social hierarchies, and the magic system. Once you have a good understanding, start with a strong opening that introduces your OC. Maybe it's a scene where your OC is in a dangerous situation or a moment of great discovery. And don't be afraid to let your OC interact with the existing characters in the Tortall universe, as it can add more depth to the story.
First, you need to create your OC. Decide on their appearance, personality, and backstory. Are they from a noble family in Tortall or are they a commoner? Then, think about the plot. It could be related to an existing event in the Tortall series or something completely new. For example, if your OC is a healer, they could be involved in a plague outbreak in Tortall.
Begin by brainstorming ideas for your OC. What makes them special? Do they have a special skill, like being an expert archer or a master of disguise? After that, think about the conflict your OC will face in the story. It could be an internal conflict, like dealing with a fear of magic, or an external conflict, such as fighting against a group of bandits. As you write, keep in mind the tone and style of the Tortall books, so your fanfiction fits well within the existing universe.
A practical answer is Chapter 24, because it turns the idea into a concrete scene. The chapter opens with Not only that, even the non-mainstream photos she had previously posted on..., adds pressure through Just because of his arrival, both were severely affected by public..., and ends on Shi Xu.
Chapter 759, "You Should Hurry and Check on Your Brother", is the clearest early answer because it turns Miss Jiang's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Everyone in the circle knew that Old Sir Jiang's belief in...
Chapter 800, "So It Was Her Causing the Trouble!", is the clearest early answer because it turns Bu Chen's situation into a concrete plot event. It opens with You, young lady, how can you be so disrespectful and interrupt when...
Chapter 895, "Love Is Not Something You Can Buy or Sell at Will", is the clearest early answer because it turns Buy's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Dai Jing also joined in with a gossiping look: "Which young...
Chapter 830, "Pinky Promise for 100 Years", is the clearest early answer because it turns Once Jiang Bufan's situation into a concrete plot event. A useful checkpoint is the way the scene starts with At eight o'clock in the evening, Jiang Li arrived home.
Chapter 11 is the strongest chapter-level answer because it starts from After a meeting, Shang Shaojing pinched the bridge of his nose, tired, and... and follows through on Miss Qin, please accompany us to the police station to explain this....
Chapter 839, "Because There's a Good Show to Perform", is the clearest early answer because it turns Chinese's situation into a concrete plot event. It opens with But don't worry." Gu Qiang said, holding Shi Lei's hand, "The... and closes on But Rong Kexi wasn't the same..
Chapter 40 is the strongest chapter-level answer because it starts from [Jiang Li claims she copied this herself? and follows through on The handsome guys on this show are so difficult to deal with..
Chapter 839, "Because There's a Good Show to Perform", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. It opens with But don't worry." Gu Qiang said, holding Shi Lei's hand, "The... and closes on But Rong Kexi wasn't the same..
A practical answer is Chapter 19, because it turns the idea into a concrete scene. The chapter opens with What criminal law is this or that, this was originally none of your..., adds pressure through Brothers, go in and drag this bad woman out!" "I'll see who dares touch..., and ends on Please.