I wrote a short story a while back... It's kinda long so I'll just link you to it...
HereNow for my critique of your poem/song! Please excuse me if I am a tough critic.
It has good emotions, but it seem rather... abstract, I guess would be the word. I think you need a bit more figurative language as well. I mean, it just seems kind of flat. You need to make it pop more, make it a bit more original, add some good literary devices (like similes and metaphors) to spice things up.
Hope this critique helps~!