New characters/character designs (maybe partially revealed, or fully?)

Some few storyboards (AKA the sketched panels, probably without dialogue)

Background preview art (only the backgrounds of some complete panels)

Animated panel sketches/previews (these are much rarer)

Story plot teasers, much like the blurb on the back of the book (only revealing the start?)

Different promotional artwork (similar to the chapter title posters I already make)

Something else? (Please comment, leave suggestions! I'd love to make my story more familiar to newbies, since right now I keep it pretty hidden 8w8;; which can turn people away)