Here is an example of a toon shaded render of my temple, the technique I used was very simple, I used a falloff map with 100% self illumination then used two colours, the main yellow colour and a much darker yellow colour to act as the shadow, I changed the curve editor so that the two colours where parallel to each other, therefore making the change sudden rather than a long gradient and lastly I changed the falloff type to shadow and light and added contour lines.