Practice and practice some more. Really helps to be in a team and on discord with someone doing callouts.
Your going as drg? Myself i was Nin for 05S so what i told the team (as i was the only mellee) for diabolical wind i think it is called right after the stack in the middle i would tell the team what corner i would go in, ranged would go to the back. Our tank is the one that does the callouts and it really helps alot.
Also Arm’s length is a must and Feint is good to have, i know that was not the topic but figured i would add this in here