Use the tag appropriate NSFW tag for the event so it can be properly filtered.

Do not harass any content creators.

Make sure to add content warnings either to your tweet or in the link.

If you don't like something ignore it/block/mute.

Properly tag your work so people know what content is included.

You can use privatter, poipiku, pixiv, or even Ao3. Add the submission as a link to your tweet.

Submissions can be any transformative works. : Fan-fiction, art, twitter threads, video edits, etc.