Formal Breakdown of Reference
Composition It’s a typical symmetrical Byzantine composition. The protagonist is in the middle, surrounding with others and an ornamental frame. The complexity of figures stands out of the simplicity of background.
Texture It‘s made of mosaics. Even those “gemstones” on the frame consist of mosaics.
Lines Lines are rigid. When the artists needed a line, they pieced mosaics in a same color together into a line. So there won’t be many variations in a line. Not to mention their perspective was becoming bad at that time.
Color/Value Overall the colors are saturated, which makes the whole picture look luxurious. At the same time, there are only limited number of colors because of the using of mosaic. The light and dark change abruptly.