How can you use highlights and shadows to create a realistic portrait

Question: michelangelo made several creative decisions in the process of making the pieta. one of these was to portray mary as a young woman. how would the sculpture be different if mary had appeared to be in her early 50's, as she probably was when christ was crucified? would this improve or detract from the work? why? use additional internet resources in support of

Who is responsible for making sure that the sound design plan in us u who is responsible for making sure that the soundesign plan in a theatrical production is feasible?

Artists best achieve contrast in a composition by: a. drawing with realism b. shading a drawing with dark and light values c. using drawing techniques like stippling and hatching d. focusing on line and shape in a drawing