I like your song, playing, vocal and mix. I would only add that the drums a touch too low in overall level. Kick is tight but snare, toms, and cymbals seem to far back. Also, maybe bring the stereo field of the drums into the center a bit so they are just a little more centralized.
You could double and harmonize the chorus vocal for a little lift there. Just my thoughts. What you did was really good as it stands.
