I don't know how to crit at all, really. I try to say clearly what works for me and what doesn't and I try to verbalize why, and though I make a point of acknowledging how subjective it is I still feel I am not really being helpful and sometimes maybe even piss people off. Thing is, I want the reciprocal comments so I have to keep slapping together these dry ham sandwiches.
Not so! You've expressed reasons, whys and whats in critique and comment on many poems. There's no Kelly Blue book on poems and I've always found great value & detail in your views. I suppose there might be some rules about it all, somewhere, but there's nothing like a visceral reaction experienced, expressed & conveyed in real time plus edits. So carry on!!