One way to start writing a parley fanfic is to think about the emotions involved. Are the characters angry, desperate, or sly during the parley? Understanding their emotions will help you write better dialogue. Also, consider the stakes. What will happen if the parley fails? High stakes can make the story more exciting. Start with a brief introduction of the situation leading to the parley. Maybe there has been a long - standing feud, and this parley is the last hope for peace. Then, gradually build up the parley, introducing new elements and twists as it progresses.