I am having problems using layers while editing a photo. I am using PSE 9 on a MacBook Pro running Yosemite.
For instance, I am editing a photo of my Mom and Dad, using the spot healing brush on their faces and whitening Mom's teeth. These are my layers:
Pearly White 1 (Mask)
OK, now I think I am finished......but......I see something else I want to fix on Mom's face. When I click on that layer, it won't let me fix anything now. How can I fix something on that layer now? I have never been able to figure it out and I know there must be a way.
Thanks for your help!