Interesting. I'm really not sure that saying, "No rules," and "It must look good to me," are consistent statements. If there were really no rules, one would have a difficult time evaluating if it looks good or not. The rules may be unconscious, but it seems to me they are deeply embedded in the culture. Asian or Indian paintings look quite different from Western, and not just because the subjects are different. That being said, breaking the rules, consciously or not, has a long history of being on the cutting edge of "Art." It grabs at the viewer, and forces them to look.