In Progress Painting

This is the basic tone. I rarely work on a plain white canvas, but I'm doing so in this one. I need this painting to look as realistic as possible. So I'm going to push my dark tones as dark as possible, and my light tones as light as I can without it coming off as cartoonish. For this painting, I'm using a mixture of Titanium white, Prussian Blue, Cadmium Orange, Mars Black and Raw Umber.