I don't want to break it down on you.
I'm sorry to say but ahm...
You just totally stole the melody from DJ Tiesto - Adagio for Strings without giving him any credit or mentioning it. It sounds fine, don't get me wrong, but all the artists ripping melodies nowadays, even in popular mainstream music is giving me a headache.
Don't contribute to the music industry falling apart please, and let your OWN creativity speak!