On this page of our The Medium guide, you will find the exact locations and descriptions of all the Eerie Drawings. Remember, there are no achievements associated with this secret.
Location: You will find this drawing on the second floor, at the end of the corridor in Niwa Resort.
Examine the boxes blocking your passage further. Your spirit form will see a drawing that it can grab and hide in the inventory.
Location: You will find this drawing in front of Thomas's office, in the Niwa Resort.
Go to the right corner of the room and look at the destroyed floor. The picture lies between the branches.
Location: You will find this drawing right next to the mirror that will take you to the spirit world, in the Niwa Resort.
Examine the boxes lying next to the mirror. The paper is easy to spot despite its peculiar color.
Location: You'll find this drawing in the spirit world, to the left of Nicholas' and Tori's bodies.
To get to the picture, you simply have to walk to the end of the room (directly to the spot opposite the camera). Go there and pick up the drawing.