One key element is Luna's character. Since she's a complex character with a past of being Nightmare Moon, fanfics often explore her redemption and her relationship with the other ponies. Another element is the magical world of Equestria. Fanfics use this setting to create unique stories around Luna, like her connection to the night sky and moon magic.
Themes of betrayal can be common. If Luna was betrayed by someone she trusted, it would be a very sad situation. This could be a pony she thought was her friend or an ally. The resulting sadness could lead to her withdrawing from others and becoming even more melancholy as she tries to deal with the pain of the betrayal.
One key element is the idea of an idyllic setting. It's often a place full of beauty, like lush meadows, clear waters, and bright skies. Another is the ponies' journey to reach or create this paradise.
One key element is the character of Colgate herself. Her unique personality traits often drive the story. For example, her shyness or her determination can be central to the plot.
One key element is the diaper itself. It often becomes a central part of the story, whether it's about the pony getting used to wearing it or the reactions of others to it.
Another element is the setting in Equestria. The magical world provides a backdrop for their adventures and interactions. For example, they might discover a new part of Equestria together. Also, their individual personalities play a big role. Twilight's studiousness and Rainbow Dash's competitiveness can lead to interesting storylines, like when they compete in a magical - athletic event and learn more about each other in the process.
The relationships Capper forms are very important too. It could be his friendships, rivalries, or even his family relationships if the fanfic decides to expand on that part of his story. These relationships drive the plot forward, like when he has to make a choice between helping a friend or going after his own self - interest.
Character development is a key element. Writers often take Blueblood, who was initially a rather snobbish character, and develop him into a more complex and likable pony.
The relationship between Celestia and Luna is central. It can range from affectionate sisterly love to a more strained relationship due to past events. The fanfic also often includes elements of the celestial realm, like the sun and the moon which they control. Their different personalities, with Celestia being more composed and Luna having a more mysterious side, are also key elements. These elements are often used to create interesting dynamics in the story, whether it's a story of reconciliation or a new adventure together.
Typical Princess Luna fanfics often have elements like Luna's relationship with her sister Celestia. It might explore how they interact and support or sometimes have conflicts. Another key element is Luna's connection to the night and her magic related to it. Her powers over the moon and dreams usually play a big role.
One key element is the relationship between them. It could be a deep friendship or something more romantic. Another is how their individual personalities interact. For example, Luna's dreamy nature and fem Harry's determination. And often, the magical world of Hogwarts serves as a backdrop, with elements like spells and magical creatures playing a role.