Creative criticism can be a wonderful thing to see one's artistic flaws that would have otherwise not been noticed. It can also be hurtful, rude, and uncalled for.
I'm just using this as a gentle reminder that not all artists ask for criticism, but if they do remember there is a person behind the artwork.
***Personally I find it strange when people critique the photography done on my photos anyways. I am the model not the photographer 99% of the time and it makes me feel weird receiving critiques on work that is a collaboration.