Always write, or sketch works of an artist, in a distinctive color. Select contrasting colors for other artists. Use arrows to link comparisons. Use examples visible in the artworks themselves to support your argument. Analyse the works using elements and principles of art and design.
Chronology is important.
Put earlier works above later ones. Changes may be visible in later works due to experiments or experiences the artists have incorporated. Preservation, presentation and promotion. Preservation begins as soon as an artwork is completed. Know the optimum ranges for exposure to lighting, and the preferred ratio of temperature and humidity.