I didn't see this in the general rules of this sub forum, so as a note:
Any those who post art that is claiming to be one of their characters, please put a disclaimer under said picture declaring that it isn't your work. We've had issues with this before, and the artists don't appreciate having their hard work ripped, and then posted as another character. As long as you give credit where credit is due, it shouldn't be a problem.
Altered art is the same, even if you took the picture off of a site, and then altered it to look like your character, its still not your own art.