The ending doesn't work for me. Otherwise, you've got a great start going. If you were actually going for the quote, then "Life's a shadow" should be "Life is a walking shadow," but you might not have been.
I like it. I especially like the start but I just dont get the end...about the innocence...can you explain it to me? I mean innocence cant really change ever can it? So what exactly are you hiding from him? I like how the poem works though, the structure and everything, it flows well and the idea is solid.