portrait: artistic representation of one or more persons

studio: working places set aside for artists to work, the term is generally applied to workspaces used by artists creating fine art, particularly art dating from the 16th century to the present

portrait at bust length: representation of the upper part (head, neck, and a variable portion of chest and shoulders) of the human figure, in picture or sculpture

old age: consists of ages nearing or surpassing the life expectancy of human beings