In such a fanfiction, Harry could combine his knowledge of magic with tailoring. He might create protective clothing using spells. He could also attract all kinds of magical creatures as customers, like house - elves who want special uniforms. And his shop could be a place where different magical beings gather, leading to various adventures and new friendships. He could also use his skills to create disguises for secret missions or just for fun. The fanfiction could explore how his skills as a wizard enhance his tailoring and vice versa.
A Harry Potter as a tailor fanfiction would likely be full of creativity. Harry could start his tailoring business in a small corner of Diagon Alley. He would use his magic to source the finest fabrics from all over the wizarding world. His creations could be the talk of the wizarding community. He might create suits for wizards going to important events like the Triwizard Tournament. He could also use his experience with the dark arts to create anti - dark magic clothing. This would attract the attention of the Ministry of Magic, who might want to use his skills for their own purposes. The fanfiction could also involve his friends helping him out in the shop, with Hermione providing research on ancient tailoring spells and Ron being the comical assistant.