I used to be a comic book editor, years ago. Telling artists where they are going wrong and why is a very hard thing to do. I also edited a critical magazine about comics, and my greatest regret about having to hand it on, when the comics themselves needed my full-time professional attention, was that I had agreement from my favourite comic artist ever, Alex Toth, to do a lengthy interview and cover.
That’s preamble to a link, to an Alex Toth critique of a Steve Rude art job. It’s devastating and very accurate, and effectively shows how much of a gap there is between someone easily in the top 10% of comic artists and someone at the very peak. I wish I’d been capable of such an incisive commentary on the artists I worked with.
I’ve no idea otherwise about that site, or what the D&D-style ID bits are for on the comments.