I found a Kodak webpage (item # 5) that explained moving the subject off-center. Apparently either vertical or horizontal movement is effective.

My urge to put my nose in the very center of the image is apparently "wrong". *laugh* So much for symmetry. I've made your image my new default.

Unfortunately, I see that doing so has now changed the icon on all of my old posts that had simply used the "default" setting. Not the behavior I expected (or wanted). The old icon is still in my catalog, so I wish the old posts still used that image. :/