How to add shadows in the late local adjustment of mobile photography?

2. Copy a layer first.

3. Then, improve the brightness of the gradation of the layer 1 as a whole. This makes the photo look much brighter than before.

4. Black the shadow with a brush. The area without black is the area where we make light and shadow effects.

5. Select Filter-Blur-Radial Blur.

6. In the radial ambiguity, the maximum value can be 100.

7. The following is the effect of radial blur, which is of course not possible.

8. So we also need to set the mode of this layer to "color filter".

9. Complete