It's quite unsettling! As noted, it's extremely busy, to the pointed of chaos, but I think that plays pretty well in to "unsettling". I lack a sense of depth in front of the girl, I want to feel like she's entering supernatural world, but that world feels like it stops immediately in front of her, and I want to feel that it goes on to infinity.
Possibly it's because I've been spending some time with Wingrand, but I wish the lower left figure's eye line was more directly on the girl. I think it would give it more punch if it was clear that the other figures were utterly intent on the girl. You could get something of the same effect with selective lightening and darkening, or probably 1000 other approaches.
Figures intent on the girl is, I think, your idea? If it's not, forget it, and try to emphasize YOUR idea, instead