Describe Proportion Without Guessing the Artwork Size
Relative size inside an image and the physical dimensions of the artwork answer different questions.
A figure can occupy most of a small picture, while a large canvas can contain a tiny figure. That difference is easy to lose when several artworks are reproduced at the same size on a screen. A proportion exercise starts with relationships within the image.
Choose two visible parts
Proportion concerns how the sizes of parts relate to one another. Select two features you can locate clearly and describe their apparent relationship. Avoid beginning with a statement about how large the physical painting must be.
You might compare a head with a torso, a vessel with a tabletop or one shape with the area surrounding it. Choose a relationship the reproduction actually allows you to inspect rather than one hidden by cropping or poor detail.
Keep relative and actual size apart
Write one note about the relationship inside the image. In a separate place, record the artwork's published dimensions if a reliable museum label supplies them. If you have not verified those dimensions, leave the field open.
This makes an important limit visible: a screen view can support some comparisons within a picture without establishing the original object's physical scale. Enlarging the reproduction does not resolve that missing information.
Ask what the relationship contributes
Consider how the chosen proportion affects your response. Does one part seem dominant, compressed, delicate or unexpectedly prominent? Support the impression with the two features you compared, and allow another viewer to describe a different effect.
Do not turn an unusual relationship into an anatomical error or a story about an artist's intention without further evidence. Description and judgment are separate tasks.
End by checking your wording. A clear note should distinguish the relationship you observed from any physical measurements you verified elsewhere. That small distinction makes later comparisons more useful and reduces assumptions created by the way reproductions are displayed.