Today's work
Today, I moved on to the focal point of the painting, the dome. I had already mapped out basic shading when I did the underpainting. Today, I used Cerulean Blue as the base. To this, I used Mixing White, Titanium White and Naples Yellow to lighten areas. For shading, I added Cobalt Blue Hue.
This is just the first pass on the dome. Later, I will deepen areas, soften edges and brighten highlights.