Painting the Purple Iris
Step Eight: Chasing the light
I started to work intensely on the patterns of light and dark within the foliage.
Using various mixtures of Cadmium Yellow Light, Sap Green, Hookers Green Dark, Pthalocyanine Green and Cobalt Blue, I modeled the leaves until I achieved the effect of sunlight traveling through them. It casts some in shadow, backlights some, and makes cast shadows across other leaves. All the while I was paying close attention to the photo so I could get enough of the detail to make it believable.
I also worked on the stalks of the flowers with Sap Green, Raw Sienna and Burnt Umber.