In many such fanfictions, a key plot point could be the internal struggle Carlisle faces. He is a moral vampire, so turning Bella goes against his principles at first. He might worry about how Bella will adapt to the vampire life, with its bloodlust and the need to hide from humans. Another plot point could be Bella's reaction. She may be initially excited at the prospect of immortality and being with Edward forever, but then realizes the sacrifices she has to make, like leaving her human family behind.
Often, a major plot point is the new life Bella has after the transformation. She has to learn to control her new powers, like super speed and strength. She also has to deal with the vampire society's rules. And of course, there's her relationship with Edward. It may change as they are now both vampires, and they have to figure out how to be together in this new state.
Well, in many Bella Carlisle Jasper mates fanfictions, a common plot point is the complex relationship dynamics. Since Carlisle is Jasper's sire in the Twilight lore, adding Bella into the mix creates a love triangle of sorts. Often, there are themes of forbidden love as the relationships go against the traditional vampire hierarchy and norms within their coven. Another key plot point can be the struggle for Bella's affection between Carlisle and Jasper, which leads to various conflicts and power struggles within the coven.
Well, in this kind of fanfiction, a major plot point is often the moment of transformation itself. Alucard might use his powers in a particular way to turn Seras. Also, the way other characters react to Seras becoming a vampire can be important. Some might be afraid, while others might see it as an opportunity. And of course, Seras's own internal conflict about her new state is a central plot point.
Often, one interesting plot point is how Bella acquires the knowledge or power to turn Edward. Maybe she discovers an ancient spell or some new vampire lore. Another point could be Edward's initial reaction. He might be shocked, angry, or even a bit excited at the prospect of a new existence.
Well, often the plot points include Bella adjusting to the eternal life as Carlisle's wife. For example, in some fanfics, she has to learn new vampire abilities while still holding on to her human values. Another interesting point is how they deal with other vampires' reactions to their union, as it's quite an unusual pairing in the Twilight universe.
Well, it shakes things up quite a bit. For one, Edward's relationship with Bella changes in a new way. They are now on more equal footing as vampires. The family has to adjust to having a new vampire in the house. Carlisle, as the head of the family, has new responsibilities towards Bella. He has to guide her in the vampire ways.
There's 'Carlisle's Choice' which delves into the moral implications of Carlisle turning Bella. It shows the internal struggle Carlisle faces before making the decision and how it impacts not only Bella but also the entire vampire community in Forks. The story is full of complex emotions and interesting character development.
Well, it could start with Jasper's reasons for turning Bella. Maybe he sees a potential in her that no one else does. After the transformation, Bella might go through a phase of self - discovery. She could be exploring the new world of vampires, learning about their history and culture. And there would be the inevitable love triangle or quadrangle situation. With her new vampire allure, she might attract other vampires, causing some jealousy or competition among them, especially if Edward is still in the picture.
Archive of Our Own (AO3) is also a great place. There are many well - written and diverse fanfictions. You can look for the Twilight fandom section and then search specifically for stories where Carlisle turns Bella. It offers a wide range of tags to help you find exactly what you're looking for.
Another element is the emotional connection. Despite Carlisle's dominance, there's a deep emotional bond between him and Bella. In some fanfictions, this is shown through Carlisle's internal struggle. He wants to protect her but also respects her free will. So, he has to balance his dominant nature with his love for her. It makes for a complex and interesting relationship.
One interesting plot twist could be that Bella's transformation into a vampire gives her a unique power that no other vampire has. For example, she might be able to control the weather. Another twist could be that instead of joining the Cullen family right away, she runs off on her own to explore the vampire world. Maybe she discovers a whole new coven that has different values and ways of life compared to the Cullens.