You need to paint on the mask, not the photo. Click on the mask, then paint....
I have been painting the mask. I choose the mask which shows the photo that is why I said photo.
Thanks for your reply.
Brush colour? (It needs to be white.)
What layer have you put the layer mask on?
Easiest thing would be for you to upload a full res screen dump of your workspace with brush selected, and showing the layers panel
Brush opacity: 1% up to 100%
Brush color: White
Brush Mode was not normal, no is.
By changing the brush to normal, I got it to work. If I have any more questions, I will be sure to attach a screen dump. What is the easiest way to do that? I have been creating a word document and pasting the screen print on a blank page and making it as large as I can.
Thank you so much for your help. Just changing the brush mode made the difference.
uploading a screen dump depends on operating system. With Windows, just hit the PrtScr button top right of keyboard. Then open Photoshop, Ctrl n for new document, Ctrl v to paste. Flatten and save as JPG. (Don't downsize as we need to see all the detail.
In Windows 7 and 8 there is also the Snipping tool, which makes it super easy. Just open, drag and save.
I don't know how Mac systems do it.
Glad you fixed the brush problem.