You have some balls to cover this, haha. It's a hard song, indeed. You have pretty good range, nice screams!...but I think, in my opinion, you need to have a little more control of your voice, and even on a song like this, you have to sound "smooth" while putting even MORE emotion into it. The gritty stuff that Ripper pulls off on this song are lacking... so yeah, you need to add more emotion. Jeez, I suck at giving someone criticism, lol. But what jonpall said about having confidence pretty much relates to what I mean by adding more emotion. Hope this helps.