
If you want to paint them from life, the key is to organize the palette. For these Holsteins, I pre-mixed a dark gray and a black for their dark spots, and a couple of light tones for their white areas. I kept a separate brush for each tone.
I quickly drew their shapes with a brush on the 8 x 10 inch panel, which was oil primed with a tint of burnt sienna. Then I dove in with the tones.