 Conte's first frescoes, including "Annunciation to Zachariah" (1536), "Preaching of Saint John the Baptist" (1538), and "Baptism of Christ" (1541) were in the Florentine-supported Oratory of San Giovanni Decollato, located in Rome.The "Preaching" fresco was based on a drawing by Perin del Vaga.In 1547–48, in collaboration with Siciolante da Sermoneta, Conte completed the fresco decoration of the chapel of San Remigio in San Luigi dei Francesi.