Technically, since you're part of the Yorkton Gamers, you could upload them to the YGG gallery section and it would be legit. (Sort of?) Just put a text blurb on them saying that "these are characters that might possibly eventually theoretically get played in a future campaign. Fingers crossed! Unless I change my mind, of course", and no-one would ever be the wiser.
Or you could upload them in blog posts, the new site has a function for personal blogging. Not sure how many people read the blogs, though; especially since nobody has been posting in that section for months. Frankly, the Gallery section rarely get many visitors, either, and virtually no comments. You'd probably get more views and responses if you upload the pictures to your DA account, say, and then post links or display the pictures in a thread in the personal projects forum.
Unless @Hal or @Thing have some splendid ideas for opening up new sections in the Gallery, of course.