Feedback is wonderful to receive or is it, it can be constructive criticism or is it just straight out mean and negative. A wee while ago I had a chap who lets say to be nice, did not like my work, that's fine it does not bother me. He decided that he would engage with me and explain how bad he felt my photography was, "that is your opinion" I said, he did not like my response and continued with the description of how I should not be teaching and the more I stayed calm and responded with, "that is your opinion" the madder he got, another time I do believe I would have found the little Glaswegian inside of me and gave him the infamous Glasgow kiss. He was English so lets not hold that against him. I guess what I am trying to say is you will always get knockers of your work, you as the artist and that is what we all are have to take from the criticism what you feel will add to the growth of your art, style & vision. Sometimes nothing another time a real gem of information to take you on the next step to finding the perfect image, it is important to have someone or several people who you send work too to get feedback however something to consider is that unless that persons growth is ahead of yours or equal too you will out grow them.