In the world of art a "Criticism" or "Critique" generally means an analysis or judgment intended as a teaching tool. A good critique can help to identify where something might have gone wrong and hopefully fix it.
This can be a touchy subject. Not all "criticism" is valid (incl. mine for sure) because it is, after all, just one person’s opinion.
If it feels like you've been sandbagged by a grumpy 600 pound gorilla, you have probably just gotten a critique that is not helpful for you.
It is tough to venture (and receive) any criticism on a public forum. Maybe it is the word "criticism." Some people think that this means censure, condemnation, disapproval and attack.
My rule of thumb is to not give any criticism (i.e., advice) whatsoever unless somebody specifically asks for it.
It takes knowledge and skill to give a good critique but, all in all, sometimes free advice is worth what you pay for it - if you get my drift.
- And -
"To avoid criticism, do nothing, say nothing, be nothing."
- Elbert Hubbard