what does a personification poem have to include?

Question

how many couplets, how many what?

Answer 1

Personification has nothing to do with couplets ...

Personification is giving human characteristics to something that is not human:

The sun smiled
the wind whispered
the leaves waved to me
the clouds cried on me
the mountains mourned for me
the street carried me

This sort of personification can be used simply or can be carried through using a simile, such as
The rose lifted me like a ballerina