Does the work clearly depict objects or people as we would recognize them in the world around us (is it representational)?
Alternatively, is its subject matter completely unrecognizable (is it non-objective)?
To what degree has the artist simplified, emphasized, or distorted aspects of forms in the work (or abstracted it)? Does this artwork have a unique style?
Or can you identify characteristics that it shares with other artworks by the same artist, from the same period or place, or belonging to the same artistic group or movement?