You could also write a fanfic about an alicorn OC who forms an unlikely friendship with a non - alicorn character. They go on adventures together and learn from each other, facing various challenges in Equestria along the way.
One idea could be a male alicorn OC who is an outcast in Equestria because of his unique powers. Maybe he has the ability to control time, which is feared by the other ponies. Another idea is a male alicorn OC who comes from a far - off land and has to adapt to the Equestrian way of life. He could bring new magic or traditions with him. A third idea might be a male alicorn OC who is a detective of sorts, using his magic to solve mysteries in Equestria.
One interesting MLP Alicorn OC fanfiction could be about an Alicorn OC who has to save Equestria from a new and powerful dark magic. This OC might have unique powers and a complex backstory that unfolds as the story progresses.
One interesting plot could be Twilight's struggle to adapt to her new alicorn form. She might face challenges in controlling her enhanced powers at first. For example, she could accidentally cause magical outbursts while trying to perform simple spells. Another plot could involve how her relationships with her friends change. Some friends might be in awe of her new status, while others could be a bit intimidated initially.
One common theme is self - discovery. Since the oc alicorns are often new characters in the MLP universe, they usually go through a process of finding out who they are and what their purpose is. Another theme is friendship, just like in the main MLP series. The oc alicorns form bonds with other ponies and learn valuable lessons about loyalty and kindness.
First, create your alicorn OC. Decide on its appearance, like the color of its coat, mane, and tail. Also, think about its cutie mark. Then, come up with a basic plot. It could be something simple like the alicorn's first day at a new school in Equestria.
You could create an Alicorn OC who was born without wings but has an incredibly strong horn magic. She is shunned by some of the other Alicorns at first. But through her determination and kindness, she proves that she is just as worthy. She might go on a journey to discover the origin of her unique situation and along the way make friends with all kinds of ponies.
Friendship is also a big theme. Just like in the main My Little Pony series, the female alicorn OCs form friendships with other ponies. These friendships help them through tough times and are a source of support. In some fanfictions, the OC might be an outcast at first, but through friendship, they find acceptance.
One idea could be a villain OC who has the power to manipulate dreams. They could enter the ponies' dreams and create nightmares, causing chaos and fear. This villain could be motivated by a desire for power over the dream realm.
A good MLP female OC fanfiction idea could be centered around a female OC that is a hybrid of different pony types. Maybe she's part unicorn, part pegasus and part earth pony. She feels like an outcast in Equestria at first because she doesn't fit into any one group. But as the story progresses, she uses her unique combination of abilities to save Equestria from a new threat. Or perhaps a female OC who is a fashion - forward pony in Canterlot. She starts her own fashion line that combines traditional Equestrian styles with new, edgy looks and has to deal with the cut - throat fashion industry in the city.
One great piece of mlp female alicorn oc fanfiction is 'The Ascent of the Alicorn'. It tells the story of a young female alicorn OC as she discovers her powers and her place in Equestria. The character development is really well - done, and the descriptions of the magical world are vivid.