Grigore îs a cool bust to paint also as academical exercise, that's why I used it as turn back to the origins and go for OIL PAINT.
I used Zorn palette on acrylic Kimera Kolors ase base: to use a limited palette is very creative a fun, so I suggest you to do the same.

yellow ochre
cadmium red
ivory black
titanium white

more photos on my ig page @rusto_art

I had the opportunity to try the new Syntetic Sable Brushes, really awesome...
so here is the link to buy brushes busts and my acrylic paint too!!!