Too fast. Singing is really pitchy and forced. Timing for the chorus is wrong. You go off key too often for my liking, and the singing is flat(dynamically). The guitar(although being played too fast) is the only thing about this cover that I don't have a problem with.

Edit: JUST IN CASE, NIN wrote the song. Cash covered it.
I wasn't trying to play the chorus like Johnny. I thought it flowed better this way. Thanks for the comment.