Always carry a framed piece by holding onto the sides with both hands; never lift frame by the top.
Transport framed pieces face up (preferably wrapped in bubble wrap or a blanket). Lying face down puts stress on the paper hinges and pastel works should not lie against the glass.
Keep your art out of direct sunlight. The effect of light is cumulative and will fade pigments over time.
Do not hang artwork in a bathroom -- it's too humid.
When cleaning the glass on a framed piece, spray the cloth first, then wipe. Do not spray glass as the cleaner could run down into the matting.
Art placement in your home should be relative to the furniture nearby. A rule of thumb for wall pieces is that the center point of the work should be 60-62" from the floor. Exceptions to this rule should take into account the furniture height it is placed above. Most art in homes is usually placed too high.