I really wouldn't pay much attention to any advice given. Most of it tends to be terrible. Keep PVPing and pay attention to what you did during the match and the outcome. Make changes until your teams success rate increases. No two people PVP the same and not all strategies work for everyone.

I do agree with Cali though... Please go back to the drawing board with the Tomahawk spam to kill healers. I am surprised it has ever resulted in a win for you... O.o