the progression was done a little slow, but not bad. glad to see someone who would actually change the tune so it'd fit the voice better rather than trying to sing what you know you can't. like I said, other than it being a little slow, and I think you may have gotten the vocals a little bit off, but otherwise, well done.
it sounds like u recorded the guitar and vocals seperately, if im correct i would advise u record them together to get an even level but ur singing is perfect and justice is done