Famous artists' work

I’m interested in famous painters’ work, say one of Van Gogh or Picasso. How and from where
can I download a piece of their work into Blender (2D will do) and how can I modify it ? I need a detailed answer !

There are sites you can use to make lithophanes.
Instead of making a lithophane from a 3d printer, just use the file for blender.
Btw for help it’s best to go on support.