What perspectival systems did jan van eyck use to give a sense of depth to this painting, and where did he use them?

Explanation: Jan Van Eyck supposedly made use of underdrawings to create the Arnolfini Portrait. Arnolfini's hat was supposedly drawn over several times before the paint-covered brush touched the panel. Other elements of the work, such as the oranges, the pearls of the necklace and the dog, have been painted without underdrawings.

the sculpture i am pretty sure you are talking about is the statue b. the david statue now lives in the galleria dell'accademia, florence, italy. it was made by ‎michelangelo.