Art work can be used to make a huge wall look less empty, to elevate a small space and bring an atmosphere to a space. If there is furniture against the same wall, light fixtures or anything else in the way of clean sight lines to an art work, these need to be considered. Art should elevate the experience of a space, so the size and hang need to be right.
Too big can make a work look squashed into a space and hinder it’s true greatness. Too small and the the work is swimming in a sea of space and can look lost. Two good rules of thumb when considering the size of an art work: