Oh, this is really nice. Snow White's face is really lovely and vulnerable here, the plane of the underside of her cheek is prettily painted. I like the glowing lighting on her hand, that is very well done. The motion of the feet in the foreground works well. The perspective seems good, if the bricks became larger as they get closer to the viewer it might make the plane seem less tilted down towards us. I also think you did such a splendid job rendering Snow White's shoulder and chest, I wish I could see that same detail on her foot which is kind of in the center of the piece.
I also just noticed how great the bricks look going back into the distance, super job achieving texture with those! I like the bitten apple on her mug.
I also like it conceptually. Makes me think about how codependent she was on her family of dwarves, feels like it could be interpreted as a warning. Good job!