[2][3] His earliest work, or at least that attributed to him, is the "Madonna di sotto gli organi" in the Cathedral of Pisa and dates no earlier than 1210.
One can begin with the most recognizable attributes, for example, the halos, the flat and uncrowded gold background, and the blue and red robes of the Virgin and her long features.
The golden background and halos surrounding the heads of the Virgin and Child are common in the Byzantine representation of divine or holy figures, as are the colours used throughout the composition.
Upon seeing the painting in person, one can observe a red tint in the cheeks of both Jesus and Mary that gives the flesh a lifelike quality—more vivacious, in fact, than its Byzantine predecessors.
The particular depth created by the shading of the faces, Mary's in particular—an attribute of early Italian painting—also gives it an air of naturalism that Byzantine figures often lacked.