Guercino's paintings resembled Caravaggio's works: irrational lighting, dark and gloomy backgrounds, large figures, and commoners' character types. The author was a follower of Ludovico Carracci, actively using romantic chiaroscuro, which softens the sculptural clarity of the form. The structure of the form dissolves in streams of light, emphasising the prominent parts and leaving everything else submerged in impenetrable shadow; the movements are directed diagonally into the depths of the painting's boundless space; the asymmetrical composition and rich Venetian colouring intensify the overall dramatic effect. The painting illustrates the apparition of the Madonna sitting on a cloud in a sanctuary in front of the altar. She is dressed in deep shades of red and blue. In her arms, Mary holds Jesus, who blesses Saint Bruno with his right hand. The painting's left side depicts the kneeling figure of Saint Bruno with his arms outstretched, receiving the blessing. In the lower right part is a small angel holding a white lily, a symbol of the Madonna. According to tradition, the archangel Gabriel came to Mary on Annunciation Day with a white lily, which has since become a symbol of the Madonna. The flower symbolises the unfading blossom of her purity, innocence, and devotion to God.