Modify 3d face textures

I'm working on a 3D film and I need someone to edit 2 face texture files.

The face texture images look supposed to look as realistic as possible.

One face texture is of a middle aged man. I would need one image of him much younger (around late teens if doable) and another image of him older (around mid 40's or maybe 50's).

The other face texture is of a younger woman who needs to look a bit older (around 40's or 50's).

I've attached the 2 face textures. Thank you for your interest and I hope to hear from you soon!