Poetry?

Next week at my school, there is going to be a Poetry Slam. For those of you who don't know, a Poetry Slam is basically a contest, you have to read an origional poem and are judged on the poem and how you read it.
I want to do a poem about worms, but I'd also like some people's opinions before I read it next week. So please comment on anything I should add, take away, or anything else I can do better. Compliments are also nice. But keep in mind that I am not quite finished.

Wriggling,

Through the dirt,

Not a care in the world,

An earthworm is picked

Up

By a careless child

The child

Not knowing its precious burden

Goes to the tool shed

In the corner of the backyard

Withdraws a trowel

And cuts the worm in two

Singing a song about earthworms,

Singing a song about earthworms.

A Robin,

Sitting high on a tree

Looks down in the grass and sees the

Earthworm

Unable to move

Slowly dying on the freshly mowed lawn

It swoops down

And gently snatches the worm

From its soft deathbed of grass clippings

The Robin flies back to her nest

And looks fondly at her fledglings

As she dangles the worm in front of them

And they

Chirp a song about worms

Chirp a song about worms