help me make this work a little better

so here is my POB https://pastebin.com/2FicTw5z i really wanna make galvanic arrow work cause i really like the skill this is the theory craft not what i actually have yet havent even finished levling the char fully but does anyone have any ideas on how to get some more dps/a little tankier first time trying to just do my own build without following a guide so help appreciated