One great Jorah Mormont OC fanfiction could be one where the OC is a healer who tends to Jorah during his travels. They develop a deep friendship that slowly turns into something more. The story might explore their cultural differences and how they overcome them.
They could be friends. Missandei is highly educated and Jorah has a wealth of worldly experience. They could exchange knowledge, like Missandei teaching Jorah about different languages and cultures she knows, while Jorah tells her about the different lands he has traveled to.
Missandei could develop into a more prominent diplomat. With Jorah's support in terms of security and practical advice, she could expand her influence in diplomatic affairs. For instance, she could negotiate better treaties for Daenerys. Jorah, on the other hand, could redeem himself further. His association with Missandei, a respected figure, could enhance his standing in Daenerys' court and among the people.
First, research Jorah Mormont's character. Know his backstory, his personality traits like his loyalty and his flaws. Then, create your OC. Decide on their appearance, their skills, and their motivation. For example, if your OC is a thief, what made them turn to thievery? Next, think of a plot that can bring your OC and Jorah together. It could be a quest they go on or a situation where they are forced to rely on each other.
Glenn meets his demise in the comics during a particularly intense and chaotic event. The circumstances surrounding it are quite harrowing and have a significant impact on the story's direction.
Negan's death in the comics occurs at a specific point, but I can't recall exactly when off the top of my head. You might need to do a detailed search or refer to dedicated comic forums for the precise moment.
Iron Man meets his end in a particular comic arc where the circumstances are both intense and unexpected. It's a turning point that shakes up the entire comic landscape.