I really dislike Nickelback, I just wanted to throw that out there. Secondly, I would work on improving your range. Your voice is nice, but if you were able to hit both higher and lower notes, your singing ability would improve tenfold. I also suggest singing with more power. I would understand if it was a folk song, but there needs to be more soul and power backing your voice. Lastly, I STRONGLY recommend you learn a few other instruments and study music theory. If you improve your voice and learn, let's say, guitar or the piano, you'll be making music in no time! Practice, practice, practice. That's what it is all about!