Impossible!
It nearly be
to correct a poem;
a poem is free!
Cut the words
that you don't need.
Make your lines
more fast and lean.
Without you here,
without me there,
My changing it
would not be fair.
Speak it aloud,
read it around.
Write it again,
and again, 'till you're proud.
...good luck. For real guidance on a poem you need to talk face to face with a teacher. I like what you have written so far, but you could do with a few rewrites - try to see what words are unecessary - to make it shorter and to give it more impact. Also pay attention to what image is being painted in each stanza; all the lines of one stanza should be strongly connected to eachother.
If you post a rewrite we will have more to talk about.
good work!
Jesse