I like this song! It's really good, but there are a few little things that I would change to improve it:
a) Personally, I don't like the way it passes, in the begining, form slowly mood to faster rhythm. I would start that with a bit of drums and then the guitar to start with the verse.
b) I don't like that descending armonics (pim-pim-pam-pum) you play at the begining of the verse, they sound a bit not-in-tune, and seem a kind of someone ringing you at home.
c) I would give a little more importance to the bass in the general song, but specially in the solo-guitar part.
For the rest, huge songwriting!