How do you handle constructive criticism?
Think about the person that gave it to you just wanted to help. They want to make your paper/whatever you are doing better, so that it can be the best possible.
The difference between judgment and constructive criticism is that judgment usually refers to a decision with a punishment involved and constructive criticism means to offer both positive and negative opinions on how something is viewed, but in a friendly way. If you like, a judgement expresses a valuation of something, but constructive criticism goes farther and offers opinions on how it might be improved.