Thank you for that link gener7 ...I wasn't clear in my question though...
I am following an online tutorial and cannot follow what the author is showing in his video starting at 12:38 mark of the following video : How to Get Started With Adobe Photoshop CC - 10 Things Beginners Want To Know How To Do - YouTube
He is adding a layer mask to a photo, clicks on the brush then the dark color swatch to darken the skin of a young football player ...but when I try it, I cannot get any color but instead end up by creating transparent marks.
Would you know what adjustments I must make to do what the author (Mr. White) is describing?
Well if I follow him, he creates an Exposure Adjustment Layer.
Then he cranks up the Exposure, lightening the entire body, which he does not want. It's only the head.
So leaving the Exposure set to where he put it, he selects that adjustment layer, clicks on that white thumbnail mask first, then paints
using the brush and black. What this does is "hides" or Masks the exposure effect where he paints, it doesn't paint the picture black.
He finds having to "mask" the entire body a lot of work. So he changes the mask to black by inverting it, and changes the swatch to white.
Then being sure the black mask thumbnail is selected, he paints the head with the white color, punching a hole in the mask so the exposure setting comes through on the face.
Does that make sense?
Well, I got the first part right this time ... viewed the video several times and tried several times, but could not lighten the face for the last part.... and each time I click the black or the white path, I get the color picker screen, and need to click ok.
I will try again another time.... Thank you again Gene
Best to repeat the video and observe closely. It will take a few tries, but you will get it.
I like to help, but I am working blind, so I can't see exactly what you are doing to point out corrections.
I will try again when less tired...thank you again Gene