The critique of the drawing would most likely include an analysis of the use of color in the piece. By examining how the gray and white colors work together, one can assess the mood and aesthetic quality of the drawing, as well as the effectiveness of the color choices in conveying texture and depth.
Additionally, a critique might touch on the design elements such as the straps and buckle, discussing their functionality and visual appeal. However, unless the drawing explicitly connects to an important historical event or is part of a series that includes broader social commentary, the critique would primarily focus on the technical and artistic aspects.
Judgment of the artist's drawing skill would also be a key component, evaluating aspects such as line quality, proportion, and attention to detail. Overall, while all the suggested aspects could be considered to some degree, a focus on color usage and artistic technique would be the most relevant for a critique of the drawing itself.