Thank you
It’s actually pretty simple and it’s way more important to look up or make the initial composition.
With Photoshop I crushed down the images to bitmaps having in mind how much you could ‘squish’ them and then back up to normal RGB images
All the portraits are from a french artist from the same time period the game it’s at.
Almost all interiors are images of museums about that time period
And all outside images are photos of the area the game it’s based on