Use pen tool to draw some shapes and place them behind the screen. Add layer styles.

使用钢笔工具画一些图形，并把他们抛在屏幕上。加层风格。

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Note: By Settings the Fill to 0%, the layer becomes completely invisible, but we are still able to add layer styles.

注意：当填充设置为0%的时候，图层变成完全不可见，但是我们仍然能添加图层样式。

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You should know your way around the Layers palette and know how to add Layer Styles, use Custom Shapes and Clipping Masks without much explanation.

你需要了解图层调色板和如何添加图层样式，并且会使用自定义图形和剪切遮罩。

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