16-Bar Melody in Bb Major

I created a song called (cover). The form that I had chosen was the through-composed form. I choose this form because I had chosen to not repeat measures. The hardest part of creating this composition was the fact that each measure is different and trying to make new things sound good with the old things is kinda difficult. What I had enjoyed in the creation of this composition was being able to go through different notes and actually make decent sounds. Advice that I would give to the next person doing this assignment is to actually pay attention to what you are doing, and to be very creative.
 This is the link to the song download, try it out http://www.mediafire.com/?8pdl7i0k15udf31