Edit : see a the end of the thread for final result
I finally managed to understand how nodes work in blender, and wow… It’s great.
Seems perfect to get non photorealistic renders.
So I’m making various random tests that I might share in that thread if it’s of any interest.
That first nodes setting gives interesting results in order to get a sort of “illustration like” shader. Still need some tweakings but I think it is worth showing.