Hang art at eye level.
The most common mistake is hanging pictures too high. Hang artwork so the center of the picture is at eye level. But of course, "eye level" means different things to different people.
If you are looking for some helpful tips on how high to hang art... 60" to 67" standard represents the average human eye-height and is regularly used as a standard in many galleries and museums.
In a home environment I would not adhere too strictly to any rule. It is really all a question of proportion and relationship. Or, just choose the height that you think looks best and then hang it 3 inches lower.
Choose - 56" to 60" on center. "On center" means that the middle of the picture is at the standard you choose.
Relate art to furniture size
In general, when hanging art over a piece of furniture it should not be longer than the width of the furniture.
Relate art to wall size
Choose smaller pictures for narrow walls and larger pictures for big wall spaces.