FWIW, the thing I noticed immediately when I first heard a recording of myself singing was how lazy my diction was. As a result, I worked on my pronunciation and the difference was amazing. Try it and I'm sure you will be pleasantly surprised.
My only other comment would be that the guitar work, while excellent, would benefit by introducing a very basic pick style (and/or maybe add a slower part)in one section to give a bit variety to the dynamics of the song as a whole.
You're well on your way, Matthew. Thumbs up.