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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Step 17create new layer and convert it to Clipping Mask. Draw shadow on lower corner to add depth onto the shape.

新建图层，将它变为剪贴图层，在角落画阴影增添图形的深度。

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