更改星星图层的混合模式为滤色，并降低不透明度到大约20%。

Change the blend mode of the stars to Screen and drop down the opacity to around 20%.

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设置混合模式为滤色，新建蒙版隐藏掉刚做好的雾气的某些部分。

Set the blend mode to screen and use a mask to hide some areas of the fog we've just created.

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将这一层的混合模式改为“滤色”，不透明度45%。

Now change the layer's Blend Mode to Screen and drop the Opacity to 45%.

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