I just got my summoner to Lv. 50 not so long ago with iLv. 53 by my venture stuff and a bit help from my FC. Days ago I got myself into a dungeon and the tank said "You should do better DPS" I don't know it's a bully or not.

Here is my question.
My skill rotation now if there more than 1 foe on the tank is
Bio2 > Miasma >Bio >run in to the mob and cast Miasma2 > Contagion> Bane > Shadow flare> Enkindle ruin/ruin 2 > repeate the DoTs> bane if more than 1 foe left

for a single foe I would use Fester instated and for the bosses I would raging strike before DoTs and Spur>Rouse after contagion

Am I doing it right? how should I improve? or the problem just iLv. that will take times to improved?

Thanks a lot