His artistic method merged local Catalan styles with the International Gothic movement. Borrassà prioritised narrative storytelling rather than the static, isolated figures common in earlier periods. His early work, such as the Beheading of John the Baptist, shows a preference for Italianate figures and decorative drapery. In later commissions like the Retable of St. Peter in Tarrasa, he adopted a more theatrical style. He used sharp lines and clear colours to organise his complex religious scenes.

Modern collectors appreciate the clear visual structure found in his multi-panel compositions. Borrassà represents the transition from medieval symbolism toward the realism of the early Renaissance. The vertical divisions and rhythmic layout of his retables offer a balanced aesthetic for home galleries. His focus on human expression and physical detail gives his work a sense of presence. These prints provide a connection to the craftsmanship of fifteenth-century Spain.