Original source is allowed and preferred over the approved hosts. Please designate your original source with the tag [OS] in order to prevent mixups.
If you created the movie poster yourself, you can signify this by using the tag [OC] (original content) and after 24 hours you will be given special flair. If you don't receive flair after a few days feel free to message the mods.
"Textless" posters are not allowed, to mean posters that have had the title and/or credits digitally removed.
Spoilers
To implement a spoiler tag on your comment, your comment should be: [This is a spoiler sentence.] and then (/spoiler) like this ["content"](spoiler). If you did it right it should look like this.