Here is an example. The image on the left is not too bad on it's own, but I wanted to make it softer, smoother, maybe even a bit dreamy.
I had my mode set to normal with a strength of 50%. I varied my brush size to work in small widths, but used long strokes to achieve this result.
Here is another example using the same technique. It's not totally refined yet, but you get the idea.
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