Continuity mistake: Fiona Fullerton's eyebrows change from full to plucked and back again all through the film.
Revealing mistake: After Alice falls down the hole, into the leaves, she gets up and runs down a stone to follow the White Rabbit. As she runs down the stone, it quite visibly squashes down under he feet, revealing that it is foam.
Continuity mistake: When the White Rabbit falls into the small vegetable hutch, after seeing Alice's arm out the window, some of the slats which get broken, reappear intact, and some intact slats suddenly break between shots.
Continuity mistake: Items on the side table, and a vase of flowers from the table in the center of the room all disappear between shots, as Alice begins to grow larger inside of the White Rabbit's bedroom.
Continuity mistake: When Alice is coming out of her pool of tears onto the little shore with the mouse, her dress is completely dry, she should be wet.