Posts got deleted

Was recommended to post my work in hopes of gathering more people towards my twitter accounts and it seems like all the 3 posts I made got deleted. I'd like to know what I did that was wrong because they were up for a few days and were seemingly fine until they weren't anymore.

Posts are deleted by default unless specifically approved. You can press the "Appeal" button if you believe they should be sent into the moderation queue again.

Danbooru is an archival site, not a site to advertise on. All posts are subjected to the Mod Queue.