Policies for my uploads vary by type but for the most part:
Just don't upload creations as your own, or on other sites, especially the exchange. If you must use something I created on a free site, credit me and link back to here. If you use something I created in a movie or story, credit is appreciated but not necessary. However, I would especially love a link to post here so that I can see the different ways people use things.
Constructive criticism is always accepted, but please keep in mind that I, like everyone else, have feelings, so try not to be unnecessarily cruel or rude.