Couldn't really see much metallica in there. Not only that but I'm sorry to say at points it was messy rhythmically. That and the drums were pretty basic which could have made the song sound better. Quite a bit of work will probably be needed on this.
Just look at it this way, the empty E string is like "home", and with time, we get aquainted with other frets. I've spent a few years on the fourth ;), now my guitar don't have enough strings.