For sharing fanart on deviantart, first, create high - quality art. Then, sign up for an account on deviantart. After that, find the 'Upload' button on the site. Fill in details like the title, description, and relevant tags. Make sure to credit any original sources if your fanart is based on something else.
It's hard to say it's a widely 'popular' genre in the traditional sense. While there may be some fans who explore such themes in fanfiction, it's not something that represents the mainstream of Splatoon fan works. The Splatoon series is mainly known for its unique gameplay and colorful characters, and most fanfiction focuses on things like character relationships, adventures in the Splatoon world, and interpretations of the game's lore. However, in the vast realm of fan-created content, there will always be a small subset of more niche or out - of - the - ordinary concepts like this.
Yes, it's possible. You could also reach out to individual artists you admire. Check out platforms like DeviantArt or Tumblr. Look for artists whose style might match your story's vibe. Send them a polite message explaining your story and ask if they'd be interested in creating fanart. Just be prepared that they might be busy with their own projects.