Funny thing about art.
I know how to critiqe my students on their labs and exams, I know how to critiqe a young skydiver after a jump (called 'post-diving') and we call it "constructive critisism".
But when it comes to art the 'art critic' seems to always be depicted as a troll. I mean like even in the movies the art critic is always someone with their nose up their but* ***** and slamming everything and everyone...well, except untill they come across some color swatches painted by a chimp or an elephant.

Is this an 'art thing'?

FYI, I found this link some time ago over at 3DCom:
"Giving Critique - a Check List for Critiquers"
and another here:
Giving Critique By Owen Richards