Answer:
It can be any width, size, shape, position, direction, interval, or density. Points create lines and lines create shapes. A line can have other elements like color, texture, and movement applied to it
What was specific about his painting technique was that he would always try to involve the viewer of the painting by drawing eyes and the positioning of his characters in such a way that it always seems as if they're maintaining eye contact with the audience. This was done using various perspectives and is kind of like an illusion, similarly to how the Mona Lisa is painted.
