After the drawing is done , it is time to add a little more depth. I begin to emphasize the black and white drawing, deepening the black pastel and also adding white highlights. I am working on the dog located on the left first. I do that so as not to drag my hand thru the finished work. I will do the dog on the right after I finish the first dog. I also want to say that, the first dog is mainly black and the second is black and tan. A great combo for a painting.