ummmm....to tach people how to draw dog heads in tree simple steps. very easy.
start off with the basic sstructure of a dog's head just use the line tool for this step.
now add detail such as rounding, the mouth, the eye , ear, and nose.
now erase the guide lines and add more specified details such as a collar, ear detail, fur detail and those whisker dot thingys.
and theres your do head!