I was just reading an explanation of the creative process by Phillip Guston. I think it gives excellent insight into why artists will continually go back and rework paintings that look good to an outside observer. Guston said, that as the artist, he did it because he hadn’t “experienced” enough with the work. For myself, when the abstract image comes too easy, and I feel I haven’t taken the work far enough, I will keep pushing it. Of course, there is always the possibility of ruining the image, but my Muse demands that I move on through the work. By doing this, my aesthetic “experience” becomes richer. Once again, to the artist, it’s all about the process.