This detail shows an area of obvious difference between the drawing and the print. In the upper left of the drawing, the cherub's body is hidden by drapery. In the print, however, the cherub's arm is clearly visible as it holds back the curtain. The RTI image shows that engraver Jacob Matham fully inscribed this area of the drawing with a metal stylus to exactly transfer the composition to the printing plate. This shows that he changed the position of the arm after he transferred the composition but before he carved the plate.