I need it for a project in school and I don't have a clue

I love this poem.
But the critical appreciation has to be done by yourself.
Here's some tips on how to start.

CRITICAL READING: A GUIDE

Are you talking about the author, William Wordswith? Have you read the poem?
Are you to find someone else's critical appreciation of the poem or write your own?

You can start with these two site: http://www.collaborativelearning.org/daffodils.pdf
Papers - The Connections and Differences Between Miracle on St. David's Day and Daffodils