I love the incredibly expressive artwork! So well done.
Also, the story is delightfully mind bending. I really loved the distinctive voices for all the children and the way their art expressed what they were feeling at a given moment (I think. I got the worst ending, so maybe I was totally off there). Then I loved how I could less and less trust my own perceptions until well...the ending. (Which wasn't a surprise so much as something that felt organically right with the story.) Great job!