Explanation: (for victor) he is described as a shy, timid character whose body language suggests that he is easily startled. When he met Victoria he had stuttered, we can infer that his nerves got the best of him and is nervous in nature. He had stumbled when trying to recite his vows which re-enforces that he is an anxious individual.
Op art designs are usually geometric patterns used to create an illusion. Im not really sure what you mean by "how say two artists that drow these things"