In order to fix the shirt I copy/pasted a part of his shirt and then I blended it (using curves and transparency mask).

为了修正汗衫，我复制粘贴了他汗衫的一部分，然后将它与修正部分融合（使用曲线和透明蒙版）。

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Copy now the mask layer, applying to it Filter -blur -gaussian Blur.

复制面膜层，点击滤镜-模糊-高斯模糊。

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Then I create a mask on the copy of the image, and I start to remove the chosen zones with the "brushes".

然后我在图像的副本上创建了一个遮罩，用笔刷移出了选择的区域。

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