There isn’t a great deal of information on photorealist painting techniques available on the internet.
Photorealist painters tend to be quite secretive.
I had a free PDF book to download on my old website but when I changed to a new domain name it wasn’t included.
Until now.
I have made some very minor changes and it can be downloaded by clicking on the image.

Thaneeya McArdle’s tutorials

You can also get more information from
Thaneeya McArdle’s tutorials.

Steve Greaves tutorials

Also Steve Greaves has a number of
tutorials here.

Photorealist Painting Techniques Free PDF book

Click on the image to download the pdf.