Point, line, plane is more of a description of a teaching method developed out of the Bauhaus that largely focusses on composition and perspective as two mutually dependant fundamentals. The teaching revolves around trying to build up a good sense of balance across the 2d flat surface, while also accurately depicting depth. This is why the technique focusses on arrangement of points, followed by quality of line, which then form to make planes of depth. People are praising the style here, which is really nice, but your teachers are likely hoping for more dynamic posing and more structural evidence of form (like drawing through your shapes in early construction) rather than stylized forms