I really like this painting style! The choice of colors is incredible, same for the shading/lighting! :D
I feel like these 3 At-tans are "who she's supposed to be after being..." according to people?
I do have some questions :
Why is there a keyhole in one of her eyes ?
Why are her eyes, nose and ears cut off?
Any meaning for the choice of ants, bees(?) and caterpillars?
Who is that creature beside the nun?