The lanterns are hanging fire bowls with a witch skull below. (look at the thumbnail from the vid below)
You can start wiht this challenge after the platform / rope puzzle where the chicken house lift is located. (for the puzzle solution click here
Before you start with the lift to the other side, you can shoot down 4 / 10 lanterns, during the drive you have to shoot the other 6 lanterns. There is no point where you can see / shoot all 10 lantern, you have to use the lift!