Then I added a smoke on the top of the image using the brush with a very light flow.

然后我在图像的顶层添加了一些烟雾，使用很轻的流量的笔刷绘制。

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Once I had built my bubble brush, I laid down a couple of streams of bubbles using white with the brush flow set to 50%.

当我开始建立我的水泡笔刷的时候，我用白色把笔刷值设为50%画了成对的水泡串放在下面。

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