replace a face in a painting

[RobbieUSA]

Probably asked at least twice,but I can't find an answer:
When I replace the face on an old painting with a photograph, I can't get these little cracks in the orignal painting to show up in the new face. How do I do that? (Think Hillary Clinton's face on Mona Lisa)

Thanks!

[pellepiano]

You need separate cracks. You can find them perhaps in a one colored section of the painting. You can use that as a texture, by for instance use the highpass filter ( radius 1.0 or so ) and put that on a separate layer so it covers Hilarys face, and change blend mode to Overlay.

If the cracked part is to small you can make a pattern of it so you can fill a larger area.

[RobbieUSA]

Thanks, I was hoping for something even simpler I guess. But no subsitute for honest work