If I'm being honest, I'm not very good at giving criticism(especially since my art ain't that great either and idk this game). But pretty much the only noticeable criticism points is that there needs to be shadows under the characters since there is a prominent light source(unless these characters are dead then no shadow is a great way to show that). And the shadows you HAVE made were done by airbrush I see. This COULD work, but maybe try using more solid brushes like Love Pen or whatever.
Another thing is that the figure on the right doesn't really look like it's bowing exactly. It instead looks like it's about to jump off of that rock. I recommend keeping the legs straight while the upper body bends. Or just look at a reference. Yeah. use references.
Other than that, I really like how you drew the grass! And their clothes look fine, along with the characters themselves. I'm not gonna criticize the hands & feet because I like drawing like that also, as you can see in my artworks lol
PS: It said you fixed a bunch of clouds but I don't see them???
PPS: GODDAMN 166 LAYERS?! Did you make a layer for each brush stroke or something? And all in 3 days? Your speed impresses me. ToT