While Iwaku's primary demographic is its roleplaying community, it caters to various creative pursuits including graphic and literary arts, as well. We have the Writing and Art Museum, blogs, and a worldbuilding section that may be appropriate for you if you're looking into that sort of thing. :3
If you're curious about roleplaying, I'm sure @Spammy's already got you covered, but if you'd like I can try and brief you on the subject! ^.^