How To Pre-shade Without An Airbrush 

Thank for your words in french !

I would definitely spend some money on good odourless thinners from someone like Winsor & Newton. You don't use much so it lasts forever.

Nice tip :-)

Great work congratulations ❤🎉

It must be my screen, because no offense I can't tell the difference, plus putting on a varnish coat afterwards dissolves about 75% of you extra effort.

Uh......Sorry to tell you, what you're doing is, is called POST shading. You didn't do any PRE shading.