Considering Lanc's far-side wheel is blatantly fucked up I'd say the artist just plain dropped the ball hard on her layout and geometry.
Not scoring high on perspective and suchlike either... if I was to guess I'd reckon the author isn't at all used to drawing characters in a detailed "setting" as opposed to in isolation against a generic coloured background.
Also Eun's tail literally looks like it's coming out of her damn bunghole like some sort of disgusting overgrown intestinal parasite (which admittedly is an error I've seen even well-paid graphics professionals make, I used to play the Neverwinter MMORPG where this was rampant with Tiefling tails...). DX