This is a great question friend! Thank you for asking~
I love constructive criticism. I love advice. I’ve never had the opportunities to take formal art classes or anything, so I’m on my own as far as learning goes, and getting pointers from different people is really important to me.
But there’s a distinction between constructive criticism/advice and flat out telling an artist how you want them to draw. Just telling me what’s wrong with something I draw, or what looks bad? Yeah, I probably already know, so that doesn’t help me at all. If you want to send me criticism, make sure it’s constructive. My coloring sucks? Okay, don’t just tell me my coloring sucks. Give me links to tutorials, point out specifics and give tips on how to improve/things I can try.
Also, please, if you’re going to send me critique, do it off anon. There is a 100% chance that I won’t be mad about it. If you send me vague, confusing things on anon, its not gonna sit well with me. It’s so much easier to clear things up when I can talk to you directly.
I know it takes a lot for some people to come off anon, but it takes a lot to post art too, so just keep that in mind.