One possible plot could be that the OC is a talented shinobi from another village who ends up in Suna. They get involved in a mission to protect Suna from a group of rogue ninjas. Along the way, they form bonds with the local shinobi, like Gaara and his siblings, and learn about the unique culture and challenges of Suna.
The plot could revolve around the OC painter's journey in Suna. Maybe they are hired to paint murals for the village. Along the way, they meet various Naruto characters like Gaara. They could use their art to bring a new sense of hope and beauty to the sandy village.
Maybe the civilian OC is an artist who comes to Suna to seek inspiration. They end up befriending a group of local children and through them, learn about the hidden beauty and cultural traditions of Suna. However, there is a drought approaching, and the OC decides to use their art to raise awareness and funds to help the people of Suna prepare for it.
Temari would be a great addition. She's strong - willed and a skilled shinobi. The OC could have some friendly rivalries or training sessions with her. Also, Baki, as a sensei in Suna, could play a role in mentoring the OC in some Suna - specific jutsu or combat styles. Another interesting character could be the Fourth Kazekage. Even if it's just through flashbacks, his actions and decisions had a huge impact on Suna, and the OC could learn about Suna's history through stories about him.
Besides the OC, Baki could be a main character. He's a respected ninja in Suna and could be tasked with looking after the OC painter. He might be initially skeptical of the painter's abilities but later come to respect them. Another possible character is Yashamaru. Even though he's dead in the original story, in the fanfic, he could be a spirit that the painter somehow communicates with, and Yashamaru could give the painter insights into Suna's history and the people's feelings.
Maybe Naruto leaves to Suna because he has some personal issues in Konoha. He could be seeking a fresh start in Suna. There, he might meet new friends and foes alike. He could get involved in Suna's internal politics or power struggles while trying to prove himself as a valuable ally.
Well, in a 'naruto lives in suna' fanfiction, perhaps Naruto is exiled from Konoha for some reason. He then finds a new home in Suna. He starts training with the Sand ninjas and discovers new aspects of his chakra control. He also gets involved in the internal politics of Suna, trying to bring peace between different factions within the village.
Well, one possible plot could be that Naruto, for some reason, is found in Suna and taken in by a family there. Maybe he's lost during a mission near Suna. He then has to adapt to the Suna culture which is different from Konoha's. He might learn new jutsus specific to Suna and form new friendships with Suna shinobi.
One possibility could be that Naruto goes to Suna to help them with a new threat. Maybe there's a powerful enemy that only Naruto's skills, like his Rasengan and shadow clone jutsu, can deal with. He then starts training some of the Suna ninjas in new techniques, leading to stronger bonds between Konoha and Suna.
In the 'naruto moves to suna fanfic', Naruto might face a lot of challenges adapting to the new environment in Suna. He could have trouble getting used to the different climate, which is much hotter and drier compared to Konoha.
One possible plot development could be Naruto making new friends in Suna. He might meet some shinobi who are initially suspicious of him because of his status as a banished ninja from Konoha. But over time, through his actions and his kind heart, he wins them over. For example, he could help with a local Suna problem, like dealing with a group of bandits that are harassing the outlying villages. This would show the Suna people that he's an asset, not a threat.