Note: It doesn't have to be yours, and if it isn't, put the creator of it in your post and/or a link to it if it's on deviantart, imgur, etc.
Don't post images that are:
part of a different franchise
made completely by Nintendo
(for example)

Someone else's art that is in this forum
offensive people
NSFW
But do limit:
Basic drawings
(for example)

Furries
Inflation
Weight Gain
Memes