Sumatran Tiger Head - Original Oil Painting

I started another Sumatran Tiger painting today, I'll pop a few progress photos every now and then.

I kept the under-painting rather minimalist, the only real areas are light and dark, and the contrast between them is not that great, so painting is made fairly easy and straight forward.

The transparent Indian Yellow, is built up in layers to give a bit of depth to the tigers fur. 
All yellow areas are Indian Yellow only. and the difference in colour, is simply thicker coats of paint in that are in that area.
The dark's are a mixture of Navy Blue and Burnt Sienna.