so i have a repo where i post my art (NOTE, NSFW), and i have source files up for download. are there other repos like mine where drawings are hosted only? also is it possible that commits to project files work like normal code commits (im guessing not)
I don't think we can completely describe the full breadth of what people choose to store in their repositories. But, to a greater or lesser extent, git stores files as files and doesn't care what's in them. It is true that git is better designed for text files than binary ones, but many repositories contain image files of one sort or another. As far as versioning goes, git doesn't try to determine differences between binary files, but you can still store different versions of a binary file within a git repository.
I hope that helps. If you have more specific questions, please let us know.