All in all I think it's a good tune, but I would do some things differently. To me it seems a little long and lacking in dynamics (as some others have mentioned), but I think it has a good melody and I liked the vocals.
Changes I would make... bring in drums @ around 1:10, cut the 3rd chorus before the "leaves on the trees" section, shorten the "leaves on the trees" section a little and bring in an electric riffing under the vocal, and then keep it big until the fade out at the end. Essentially making it build the entire way through the song.
Just my .02... take it for what it is.