This video shows a very easy way to map a portrait photo on a 3D head compared to how you would normally do it in other 3D software.
My personal preference might be to do all this in 3D studio Max and Photoshop with a little projection mapping mixed in the workflow to speed things up but that is only because I’m familiar with these programs. If your not, I would think that FaceShop is the best method for you as it outputs to OBJ format which AE should be able to read.
If it doesn’t, you would have to take the OBJ file through another 3D app first such as DAZ (basic version is free I believe) or any other 3D app you like!
(After effects should accept most 3DS, OBJ and collada files if they are created correctly.)
Graham Macfarlane
3D animator and VFX specialist
London UK