in order for this to work the artist needs to accept the crits with the same courtesy that they were given - If an artist gets all defensive and argumenitive over a crit I give - it will be the last  one I give. I just gave valid crits to a member who asked for crits and all they did was send me a msg defending the peice and  telling me "that's the way I wanted it" - then it's perfect and you dont want crits.