Im with davi. When you ask for criticism, you must be prepared for it. Critcising the people that respond, and that tries to help you, isnt very smart, it only leads you into an a dead end, which is horrible if you want to evolve as an artist.
Even so, maybe next time you should define what you think constructive critcism really is. That way you wont get mad when you dont get the feedback you wanted.
Tip: Try to make a "lineguy" first and then flesh it out, to get the proportions and the stance right. Works for me anyways
gonna learn how to draw, or die trying