I've been working on a fanfiction story set in the Sandman/Vertigo universe. It started out as a fun little side project until I found it growing into a larger short story with chapters and all. Now, when it comes to using properties that do not belong to you, are you allowed to place your material in your own blog (as long as there is no monetary gain from it)? My goal is to create a separate blog where I plan on placing this story, hopefully with fan art and all. So my question, does any of this violate any copyright laws? Thanks for any help.