If you can, take a phone flashlight and shine it in. Another tip is if you have one of those ear things that light up and you can look into people's ears. Try shaking it around just slightly to see if you can hear it in there, if not it has fallen elsewhere.
If you wanted to create a blurred background effect when taking a portrait, then it is a good idea to include more back ground in your picture.
Answer:
Circulism: Used to shade a base layer on the hand to give it a consistent base texture.
Contour Shading: Used to shade stretched skin.
Hatching: Used to shade nails and stretched skin.
Cross Hatching: Used to create patterns in the skin and to emphasize deep valleys/crevices.
Marxism: The method that interprets artworks in the light of their economic and social contexts. the goal of Marxism is threefold. First, Marxism desires to abolish classes in whatever form they exist. Marx and his followers have seen the injustices perpetuated through a class system. The rich get richer and the poor get poorer.