Getting the age right is an essential part of a portrait, especially for a portrait of youth. Portraits of old age are easy in comparison! For example, wrinkles. Wrinkles are a clue that indicates the age of the sitter. Their presence in a drawing or painting are frequently due to the simple fact of just too many marks & strokes i.e. a lack of an economy of means, which is the ability to get it right first time.
My fellow-painter friends who do portraits for money tell me that flattery works every time. They consciously take ten years off the resemblance by knowing the markers that indicate youth & tweeking them.
QUESTION : Can you identify the elements in the above drawing that indicate the age of the sitter?
(I reckon there’s about ten of them)