While Sam and Paige are in Sam's bedroom with the space projector, Paige suddenly sits up with the projector to her left and in front of her, but her shadow is to her right (screen left). When the camera view shifts to behind her, the projector is clearly seen well-in-front and to the right of her, but stars can be seen on her back.
Additionally, when Sam sits up to turn off the projector, his shadow should block out the star projections on the wall behind him, as he is clearly blocking the projector, but the star projections are still clearly seen on the wall.
Additionally, when Sam sits up to turn off the projector, his shadow should block out the star projections on the wall behind him, as he is clearly blocking the projector, but the star projections are still clearly seen on the wall.