outline

Topic sentence: The two jewelry ads look very attractively, and each has its feature.
Main Point1: Both the two ads have a sweet couple with jewelry on themselves.
Supporting details:
Beautiful model
There is a couple on ad A. It attracts people by showing the love between two popular stars. The company of this ad skillfully utilizes the popularity of the two stars.
Main Point2: The color contrast is the key to fascination.
Supporting details:
Color contrast
Jewelry will become more fascinating when put on the color which is contrastive to itself. On the ad A, white clothes look beautiful with pink background. But jewelry on their neck is not very obvious. Considering ad B, even though the female model is not as pretty as the other on the ad A, the black jewels look obvious on her snow-white skin.
Main Point3: Different kind of color attract customer of different ages.
Supporting details:
Style of colors
People of different ages don’t like the same color style. For example, teenagers love wearing colorful clothes or black necklace to show that they are cool. On the other hand, old people like gold or silver to show their wealth.
Concluding sentence: Therefore, I think ad B is better in stimulating selling even though the model on ad A is more beautiful.