Sorry for the incoming uh, advice? Just sort of wanted to get across my experience, what with having been in the same situation before.
I think it can be a bit intimidating at first which is probably why the OP has asked the question, especially if this is the poster's first post, but what Eishiya says is true, especially since Eishiya has helped me with my own art in the past, but only because i was willing to put it out in the first place.
As long as you take criticism as it was intended; to help you improve and to point out flaws or problems you might not be able to see at first, you'll be fine.
And for the record; i don't think ANY attempt at art is or can be "bad" as long as you're attempting to improve, be it in a doodle or a more polished piece. EVERY artist starts small and with rough pieces, pieces that can seem embarassing as they gain more knowledge and experience, but it's a necessary evil!
This is my first attempt at making an NPC/Character model:
This is an example of my most recent:
Not claiming the latter is good, but it's an example of progression that i only gained through practice and critique.
It can take people years before they come across their own style and attain a level they are happy with, but that takes work, putting in all of those hours and that requires a second opinion to keep you on the right track. My biggest fear and to a degree, my philosophy, is that i never want to become one of those artists who thinks so highly of their own skills that they ignore criticism. I was once told "If a piece of art you made seems perfect to you then you've made a mistake".
