People love stories. Every story has a main character which, either influences- or is influenced, by other characters.
If you're a film maker, then you know this very well.
When you are advertising something you are simply committing an action. That action is done by a character. Your "Brand" is the relationship between the "Story" and "The Character". Animation is simply the medium for which you are expressing yourself, it is as vague as the color brown. Don't try to look for other colors of brown to compare yours too.
Sit down and interview yourself, your films and your ideas. If you summarized your filmmaking career into a person- Who is s/he? What do they like, value, belief or prefer?
Know what your "Story is" will ultimately help you to market to your audience, and to make meaningful connections to other artists who may be willing to share their fanbase with you.
Social media, Blogs, Forums- All great mediums for you to spread your creations too, but pointless unless you know where, how and who to spread them to.