Just something to add that I don't see here posted (yet). Just hope it helps and comes off as coherent.
[Blind] Praise is not critique. One of the worst things you can do to an artist (especially a beginner) is give them too much of such, ignoring flaws and whatnot.
Most people here already know what I'm talking about (insert popular art site here) which is why it's not said, but to elaborate for the hell of it: You'll often see people who like an artist's work go up to them give said artist a pat on the back about how good said work is (with varying levels of writing quality) that, ironically, doesn't give any indication on why it's good. While not bad in themselves (if not numerous), giving such when an artist is actively looking to improve is counterproductive, and should be replaced with actual advice. Unless the artist looking for straight up encouragement, in which case have at it. <_>
The problem is that these comments in stupidly large amounts from all over the place whether they're on purpose or by accident (even here, even by hypocritical Artsy people), and it's up to the artist's job to sift through whats the "right" kind of critique and what's the "wrong" kind. To that end it's all about how objective you can stay in an every changing environment, and how much you can improve yourself when you take advice to heart.
I hope that helps...