再次返回白色背景层，在中间稍微添加些额外的灰色。

Back to a white background again. But with a little extra grey in the middle.

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再次返回白色背景层，在中间稍微添加些额外的灰色。双击图层，并设置下图参数。

Back to a white background again. But with a little extra grey in the middle. Double-click on the layer and follow the picture below.

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我用蒙版，并在中间添加一些白色触感，再根据照片，但这次放一个黑色背景。

I used a mask, and add some white touches in the middle, again according on photo, but this time the one with dark background.

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