Criticism versus learning. I've received positive and negative criticism. Deal is, right now, I'm too old for all that "noise". I don't even ask for it anymore, unless it's on my comic...like dealing with panels, dialog bubbles, story flow, and character interaction.
No artist is perfect...BUT...continuing to learn, draw, practice from real life, pictures and/or another artist is key to advance that gray matter within our skull.
I'm more into semi-realism and a bit of the anime look. But I know I need to grow in action and difficult poses which a person does every day! I'm learning from photo references, real life drawing, and other artists.