This autoaction automatically selects the colors for your shadows. Paint all shadows using the same color and get a good shading that fits the base color!
1) First put all base color layers into a folder.
2) Close the folder. While that folder is selected, click to play any of the three available autoactions.
3) A new folder is created. Now you can paint on the yellow layer with any color you want (even white or gray) and the color will vary according to the base color.
EXAMPLE.
I used gray to shade.
But when using this autoaction, painting gray on the yellow layer gives this result:
There'san autoaction for a softer/brighter look on shadows (on skin mainly):
And another autoaction for night/cold shading:
I hope this helps you!
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