All fiction counts, both original and fanfic, no matter the length. If you can call it a scene or a character sketch, a short story or novella, a novel or epic trilogy: IT COUNTS.
Scripts (screen, stage, comic, or graphic novel), poetry of all types, and song lyrics all count. Roleplaying written in a scene/story format, scenarios or battle reports for tabletop gaming, or character studies count.
No matter what you do with it: publish it, share it, keep it private—it all counts.