artBob wrote:
Glad you worked it out. "Rule of Thirds" is just a trick shortcut to a much more basic and complex type of composition, balance, which is itself but one of, roughly, five compositional principles. I suggest you go the the composition or graphic design section of your library, pull down a few books from the section, and check out the one you like best. The "rules" are pretty much the same, their presentation and grouping sometimes different.
There is even a composition technique based on the spiral of a shell called the golden ratio (1 to 1.618)! It shows up in famous works like "The Wave"; "Mona Lisa" and a little piece known as "The Last Supper"