There's been more artists announced for the convention I'm going to in a week or so, and wow there are some super bad/tumblr/sjw ones. I had to link their instagrams as I have no idea how to grab images from there, apologies.
This one suffers badly from sameface and awful giant lips, along with other issues:
https://www.instagram.com/honeycomb.paints/
Next one isn't that bad I guess with some pictures, but others just look like rushed, unfinished squiggles. I really want to know how much they will be charging for these kinds of things at the convention. (A little NSFW as some are nude drawings).
https://www.instagram.com/laurakippin/