I think that cover would'a been a bit better if the guitar was recorded on a separate track, and boosted a bit, also I think your voice is too tense/constrained, I suppose. You should sing with some more passion, loosen it up try to give it some more vibrato. Just some suggestions. I know you'll probably reply with something like "I did this in 5 minutes real quick just to show people what it sounded it like" I know, just givin some critique-ish-ness.