Mark the spot on the wall above the center of the frame.
How to hang pictures on a plasterboard wall.
If you are hanging small pictures on the wall the easiest way to accomplish the task is to use small nails.
Place a hook on the rail directly above the center mark.
The ideal solution for hanging pictures on plaster is to use a picture hanging system like the all in one click rail cable hanging kit.
Hold the picture against the wall at the height you want it to hang.
Lay the picture frame face down on a table and place a strip of painters tape or masking tape across the frame just above the eyelet screws.
Soak a non abrasive washcloth in warm water then place a bead of mild soap on the cloth.
Scrub gently using a circular motion.
Instead hammer the nail at a 45 degree angle for best results.
Rinse the cloth in warm water then use it to wipe away.
Work the soap into a small patch of suds on the cloth.