Continuity mistake: As Lucy, Peter, Susan and the Beavers trek through the snow towards Aslan, their shadows repeatedly change in consecutive shots, such as going from long shadows to their right, to hardly any, to long again.
Continuity mistake: When Lucy first meets Mr. Tumnus, he holds an umbrella and the strap is either over or under his fingers, depending on camera angle.
Continuity mistake: When Lucy discovers the covered wardrobe during hide and seek, the way the cloth is draped over the wardrobe, and its folds, differ in the overhead close-up, just before she opens it.
Continuity mistake: After Susan and Lucy say they don't have fun anymore, they splash each other in the water, before being surprised by Maugrim, and a few moments later, Peter runs into the water to rescue them. The water stains on their clothing noticeably differ between shots.
Continuity mistake: After Edmund rejoins his siblings, he has a blood-clotted cut on his lip. During the scene where the White Witch comes and meets with Aslan, the cut changes from big, to almost-healed, then back to big.
Continuity mistake: When Edmund gets hit by the white witch, he gets hit on the right side of his face, but in following scenes the mark is on the left.
Continuity mistake: In the scene where Aslan dies, after the White Witch leaves, Aslan has 4 teeth, (2 sharp and 2 flat,) but in the next shot, Aslan only has 2 teeth (2 sharp.) Nobody helping the White Witch ever pulls Aslan's teeth out.
Continuity mistake: The unicorn that Peter is riding in the big battle scene has a horn, then doesn't, then does.
Continuity mistake: When the Pevensies enter Narnia, Lucy is seen in several shots with her arms at her side while Peter and Susan are apologizing to her, then her arms are suddenly behind her back to throw a snowball at Peter. She was never seen bending down to collect the snowball and Peter and Susan were surprised when she threw it at him.
Suggested correction: Right before she throws the snowball, she is seen walking up to them, so presumably, she made the snowball off-camera.
Continuity mistake: When Lucy first comes out of the wardrobe, it is snowing, and some small amounts of snow are on her hair, but, in other shots, there is either less or more. It keeps switching.
Continuity mistake: When being chased by the witch (which turns out to be Santa Claus) across the plain, the shadows change direction between shots, and in the close-ups there is more than one shadow per person.