Instructions
Press the "Square" button to open the sack-person's pop-it menu.
Press the "R1" button until the sticker page is displayed.
Select a sticker with the "Left Control Stick" and then press the "X" button.
Move the sticker overlay using the "Left Control Stick."
Press the "R3" button (press down on the "Right Control Stick"). The sticker will flip horizontally.
Press the "X" button to place the sticker.