donating art doesn't give you press.
putting your name everywhere, advertising daily. getting many friends that are related to the things you sell are needed. having keywords that fit your image is important. you seem to be lacking on the abstracts. adding descriptions as well - google picks up on these things. otherwise you want twitter, pinterest, facebook and such. other forums, blogs, your own website, etc. as well as a consistency of work so people can recognize one of yours against anyone elses.
---Mike Savad