Adhesive picture hanging strips need flat surfaces to work properly so remove any protruding hanging hardware that has been installed on the back of the picture.
Hanging pictures on walls nails or screws.
Anchors are available with hooks to hang pictures and with special hooks to hang mirrors.
If you hang a heavy picture on a screw that is only supported by drywall it is likely to pull out of the drywall and crash to the floor.
In addition the screw must go through the drywall and into a stud.
When hanging a picture between studs use a hollow wall anchor such as a toggle bolt.
Drive the pointed end into the drywall with a hammer.
If you re hanging a picture with wire use double wire for heavy pieces.
This includes nails screws wires keyhole or sawtooth fasteners or anything else that could make the back surface of the picture uneven.
If you want to hang a group of pictures for a gallery wall hang the center of the grouping at 57 inches.
The 57 inch standard is based on the average eye height of an adult and is the rule used to determine how high to hang pictures in museums and galleries.
With groupings the largest frame is usually best in the center or at the center bottom.
For hanging heavy paintings artworks and other objects from walls you should definitely use a screw rather than a nail.
Then screw the anchor into the wall with a standard screwdriver.
Drive in the metal screw and hang the picture.