There is something called "Rule of Thirds", which is only a guideline really, not a hard and fast rule that you must do.

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"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi