Slide a stud finder along the wall in the general area where you would like to mount the sconce. Mark the nearest stud with a pencil at the height that you want to mount the sconce.
Place the sconce on a work surface with the back side facing up. Center the paper over the back of the sconce. Trace the outline of the back onto the paper with a pencil. Punch a hole through the paper at each of the mounting holes. Remove the paper from the back of the sconce.
Align the mounting holes in the paper over the stud marking on the wall. Mark the location of the mounting holes onto the wall.
Drive the screws included with the sconce into the wall at each mounting hole mark with a screw gun. Leave the screws sticking approximately 1/8 inch out from the wall. This will allow the mounting holes to slide over the screws to hold the sconce in place.
Lift the sconce and position it against the wall so the holes line up with the screws. Lower the sconce onto the screws to secure the sconce to the wall.