So you want to start uploading posts to 20PC? Read this.
Topic Relevance: The relevence to the site is All things My Little Pony, Gen 1-2-3-3.5 and 4. All that is pony is welcome here.
Use tags to check for obvious *duplicates* or *variations*.
Bit-identical duplicates will be detected, as well as "Smaller" images.
Non-duplicate variations of the same image should be linked to the first uploaded version.
Respect the avoid_posting list.
If the previous step revealed no other posts by the artist, they may have requested that their work not appear on 20PC.
It's fine to tag an upload only partially, but try to cover at least its most prominent or unusual features.
Use tagme to mark uploads that could use further tagging or refinement.