To monitor progress and make adjustments whenever necessary, a printer regularly printed trial proofs. These proofs can provide insight into the printing process and accompanying artistic considerations. To the left is the trial proof for this lithograph, with Sérusier’s handwritten notes to the printer in the right margin. Sérusier made no compositional changes to the trial proof, but he recommended that the green color should be lighter (“vert plus léger”). The note “bon à tirer” (ready to print) was the go-ahead for the printer to proceed.