I've heard a lot of covers of this song...
...but this one is most definitely the best one I've ever heard. Better than the shrek cover and infinantly better than the horrible version that the x-factor winner released last year. (Ruined the song). But this is just incredible, I especially liked the lyric arrangement you chose, most people don't use this version, and I think this one holds the theme and the tone together very nicely.
Your vocals are beautiful and I especially liked the gentle piano you used. A lot of covers try to go a bit too over the top with musical arrangement, but this was done to perfection. Keep up the amazing work, and please do some more covers. One song I think you could do very well would be 'only for you' by the no-longer existing 'Trading Yesterday'.