I think it's a good performance. If you would have told me that the guitar and backing vocals came from an bootlegged alternate instrumental take by The Beatles, I might have believed it. And although you seem to be struggling a bit with the higher notes, I think you have a good voice. It has character.
One point of criticism though: I don't know what your native language is, but if you want to sing in English, you really should work on your accent.
*edit* Didn't realize this was an old post... I guess he's not around here anymore.
