Poetry - English

In English we have been learning about poetry. Poetry is divided into three big chunks.

A metaphor is something that compares another thing with something else.
Here is my example of a metaphor...
My brothers room is a pigsty.(saying that my brothers room is a big mess and looks like a pigsty)

A similes are different because they describe and compare things with like or as.
Here is my example of a simile...
My cousin is a book worm. (saying she likes to read lots of books)