Why not show you guys this..

Pretty nice screaming. I have a metalcore band myself. Our covers so far are
Silverstein - Sacrifice
Asking Alexandria - The Final Episode
Falling In Reverse - I'm Not A Vampire
Memphis May Fire - The Sinner.
Asking Alexandria - Not The American Average

Ill post the covers in the occ section when we record them, We already played a bunch of gigs though.
Im a vocalist myself. Cleans and screams, along with the keyboard.

A little constructive criticism, work on holding out those screams. And learn the cleans! I mean sure its okay to be strictly a screamer, that way you can have a clean singer that wont have to break his voice down to basically nothing. And when you feel that you start losing your head voice. STOP! Your breaking down your voice too much and if you continue your screams will start to sound like the new Devil Wears Prada.