A good way to start is to put Aziraphale in a situation he's not used to, like a high - tech, modern environment that he doesn't understand. This can easily make him scared. Then Crowley comes in, who has a bit more experience with the modern world. But Crowley also has his own issues, like not wanting to get too involved. As the story progresses, they have to work together to get out of this situation. Along the way, describe their emotions vividly. For instance, Aziraphale's wide - eyed look of fear and Crowley's annoyed but concerned frown. This will bring the characters to life and make the fanfiction engaging.
First, really understand the characters. Aziraphale is an angel but he has his own insecurities and fears. Crowley, as a demon, is more used to the darker side of things but cares deeply for Aziraphale. When writing Aziraphale being scared, show his internal struggle. For example, if he's scared of a threat to Earth, he might be torn between his angelic duty and his fear. Crowley's reaction should be in - character too. He might be sarcastic on the surface but very protective underneath. Don't forget to add some unique settings, like the little cafes or old churches they frequent.
Maybe Aziraphale is scared when a powerful otherworldly entity shows up that he thinks might harm Crowley. So he tries to protect Crowley in his own bumbling way. Crowley, in turn, is both amused and touched. He then shows Aziraphale that he can handle himself just fine, but also thanks Aziraphale for his concern. They end up having a little adventure trying to figure out what this new entity wants.
One common theme is the exploration of their relationship outside of the constraints of Heaven and Hell. Since they are an angel and a demon, their relationship is unique and fanfictions often play with how they can be together despite their opposing natures.
You can start by looking on popular fanfic websites such as Archive of Our Own. Use the search function and type in 'Crowley x Aziraphale'. You'll get a list of relevant fanfics. You can also check fan communities on social media platforms like Tumblr or Reddit. People often share and recommend their favorite fanfics there.
There's also 'Crowley's Perspective'. It offers a unique take on their relationship by focusing mainly on Crowley's point of view. You get to see his internal thoughts and feelings about Aziraphale, which adds a whole new layer of depth to their relationship.
It's hard to say if they are extremely popular in a general sense. While there is a large and diverse fan community for Good Omens, not everyone is interested in this particular type of fanfic. Some fans might be more into the romantic or adventure - based fanfics about aziraphale and crowley.
On Archive of Our Own, there are many great non - NSFW fanfics about aziraphale and crowley. You can search by tags like 'Good Omens', 'aziraphale/crowley', and filter for the appropriate rating. Some popular ones often explore their relationship in different scenarios, like dealing with a new threat in London while still maintaining their unique dynamic.
There's also 'Aziraphale's Bookshop' which is set mostly in Aziraphale's beloved bookshop. It explores how Crowley visits and the little moments they share there. It's a really sweet fanfiction that captures the essence of their relationship through the cozy setting of the bookshop. There are some tender scenes that will make you smile.
One great Crowley and Aziraphale fanfiction is 'The Arrangement' series. It delves deeper into their relationship, exploring how they navigate their differences while still being bound by their respective sides. It has some really interesting character development and beautifully written dialogue.
One great aziraphale and crowley fanfiction is 'The Arrangement'. It delves deep into their relationship and how they navigate the complex world of Heaven and Hell while still maintaining their unique bond.
Fanfiction about aziraphale and crowley's kiss often explores the complex relationship between them. It could be a way to expand on their unspoken feelings in the original story. Writers might use this kiss as a turning point to show a deeper emotional connection that was hinted at but not fully explored.