Continuity

The injured finger that's still bandaged months later in the timeline of the story.

Errors in geography

In the film, the children of Concrete go to high school in Chinook, as there is no high school in Concrete. In fact, Chinook is 268 miles away from Concrete, on the opposite end of the state.

Continuity

During the finger cutting scene, the finger shown in close up with special effects is not the finger shown when the camera pans back to original shot.

Revealing mistakes

When Dwight is shooting his shotgun during the turkey event, if you look closely you will see that there is no bullets coming out of his gun.

Continuity

When they're all having dinner after Caroline wins the shooting contest, Skipper asks Pearl for the salt and pepper and you can just about see that Pearl is not wearing glasses. But in the next shot of her, she is wearing glasses.

Continuity

Speedometer on car reads the same when Dwight Hansen drives erratically to scare Tobias and then later on when Tobias takes Dwight's car for a joy ride; also the speedometer says speeds of 70 mph plus yet the odometer never moves.