Bring in local colour
Local colour is the colour of an object without light or shadow. I create a layer under the drawing layers and call it Local Colour. For this stage I use a large, natural-looking brush. I start with green as my dominant colour and roughly lay it in. Next, I add other varying colours to create interest. This stage can still be loose and quick. It’s good to experiment! This is the foundation of the colour work that will follow.
Create the first shadow layer
I create a new layer on top of everything, call it Shadows and set its Blend mode to Multiply. This enables the local colour to show through the shadow layer. With a cool mid-tone colour selected, I begin to lay in the shadows. To do this out of your head accurately you should be drawing from life as often as possible. I also stay loose and quick at this stage… but accurate.