It\'s my fault for being ambiguous....
Basically, different materials reflect light in different ways, flesh more than most fabrics, metal more than flesh (depending on it\'s state, polished rusty etc) The idea for me, is to exagerate the way light reflects off a 3d surface, so tonality is the different values of light on any particular surface. (think of a sphere, one sides always darker than the other although the sphere is the same colour all over.
Dryrushing,blending, washes are all different techniques you can use to best represent different textures and surfaces, and the way they reflect light.
It\'s alot easier said than done, I myself still have an enormous amout to learn, but if you have a quick look through the tuorials, you\'ll find articles on drybrushing, blending washes etc, and through experimenting you\'ll get to grips with what you find most rewarding.
Hope I haven\'t gone over the top... hope it helps.
