some of my closest friends here I made when they found fault with my work :o) I don't have a problem with constructive criticism unless the person finds fault with every image I do and that has happened and really gets to you after a while. I do find it hard to offer helpful advise because i lack the confidence in my suggestions unless I know the artist well. I left one once and though the artist appreciated it everyone else attacked me to best to keep my mouth shut at times and just point out the parts that I do like and there is always something I do

Handle every stressful situation like a dog.
If you can't eat it or play with it,
Pee on it and walk away