Recommendation of taking care of Paintings, photography.
Keep the paintings of:
direct sun light,( to avoid discolor or melting of picture.
extreme temperature (too hot,cold,dry).
humidity.
busy furnished places.
Paintings on canvas my be lightly brushed with a feather duster or soft brush to remove dust. ( no water, no chemicals).
to storage should be :
storage in same conditions as would be hang.
covers with cotton or carton sheets.
put carton or ply dividers between the paintings to avoid pressure.
raised of the floor to allow air flow and to protect them from water damage.
choose interior walls rather than exterior walls for stacking your stored paintings,they are drier.
respect the art work.
light .
it personal style preference. It my be a battery- powered picture light. The size of light for small and medium size paintings its : half of the frame. For big size paintings it my be 2/3 of frame.