As an artist criticism is part and parcel. You have to be able to deal with it that is how you grown and learn. Of course when it is CONSTRUCTIVE CRITICISM. When people just want to tear down I pay no attention.
I try to only participate in the prior life is much too short to get caught up in negativity!! Growing as a person and an artist can be painful no need to make it worse for the person that is trying to better themselves. You can’t make people be better people that has to come from within. So all you can do is concern yourself with your growth and if a critique is asked then give it honestly and constructively. Sometime even that falls on deaf ears…
But in the end you have done what was asked and you have done it with the person’s growth in mind.