Van Gogh uses thin lines to discriminate the flower vase, back, and the table. The contrast color which is blue more emphasizes the separation. Also, he uses darker brown line around the vase to clearly separate. On the other hand, Banksy uses thin lines to discriminate the flower vase, back, and the table. The contrast color which is blue more emphasizes the separation. He uses thin and smooth curved line, and this successfully express well on the weakness of the wilted sunflowers. Both Van Gogh and Banksy signed their name on the vase. For the ‘Irises’, Vincent van Gogh uses thin lines to draw the outline for each iris, stems, and grasses to clearly separate and emphasize each element. ‘Sunflower’, ‘Sunflower from Petrol Station’, and ‘Irises’