Don't get hung up on the Rule of Thirds guideline. It's just one of many composition guidelines. Others can result in a more striking composition.
Think of composition rules more as a shortcut until you develop an eye for composition. And always remember ... rules are to be broken :wink:
I'm sure at some point in my art training, composition was discussed, but the first time I remember hearing about the rule of third was on the DAZ forums. I kinda sat there and scratched my head as it was discussed. Composition isn't something I've ever consciously thought about. I tend to throw things into a scene until it looks pleasing to me.
I like to fill the scene with my primary object, and I like to put objects in the foreground ... so the main object is "layered" between background and foreground objects. I use a focal point on the camera of 120 mm rather than the default. And I use 5 to start with as the xOrbit on the camera. Sometimes I lean the scene toward the camera (-5 or more), other times I bring the camera even lower (-10 or more). All depends what looks good to me. I usually forget to experiment with zOrbit, but changing the zOrbit can make a difference.
I rarely ever do the depth of field thing. Then too, since I filter my renders quite a bit, the background usually ends up softer and more out of focus than my characters.
Creepy Kid Too loaded and Pose applied. Main camera brought in closer so the top of his head and tips of his fingers are visible, but he is centered in the scene.
Image 1: 0 zOrbit, 0 xOrbit, 0yOrbit
Images 2 - 5 experiment with the xRotate and zRotate. As a rule, I tend to keep the Camera yRotate set to 0 and rotate the objects in the scene.
Poser has a cool little trick where you can create an object group (Object / Create Group), move objects in the scene into the group, and then rotate or move the entire group. The added benefit is that if you uncheck visible on the group, everything in that group is made invisible. I usually create a group for background objects and a separate group for foreground objects. This makes hiding objects in the scene to render masks easy.
Image 2: 5 xOrbit
Image 3: -5 xOrbit
Image 4: -2.5 zOrbit, -5 xOrbit
Image 5: 2.5 zOrbit, -5 xOrbit
In the end, I preferred Creepy Kid Two leaning into the camera because it emphasized his creepy little head, and the -2.5 zRotate worked better with the pose than the 2.5 rotate.
With these slight camera changes, he's also no longer centered in the scene.
Image 6: Creepy Kid Too rotated (yRotate 15), expression added, and lighting change
Image 7: Filtered, overlays, and frame added in Photoshop