To appreciate the highlights, we need to zoom in on these details. When doing high-gloss designs, it's a good idea to more than double the size of your design, because you may not be able to figure out what you're doing when it's displayed at its original scale.
Examples on the Internet
Both Icon Dock and Newism use translucent white on the upper edge of the page to create a highlight effect. Although very inconspicuous, it provides a strong luster to the design.
