You can post pictures of yourself, pictures of a collection you own, pictures of art you've created yourself, stories that you've made, poems that you've made, music that you've made.
In short, as long as its original content you can post it in this board.
A little side note, stories do not have to be posted in this board though art and other related things should be posted in here. You may post stories in the Lobby if you feel that it should be posted in there instead.