I know when I learn to do something for the first time that it helps if I can actually interact and "do" the activity at hand. Nothing could be truer then when learning to draw, especially when learning how to draw a face. If you just start drawing the eyes, a mouth, and a nose, you may come up with a pretty decent portrait; then again you may come out with something that looks like an abstract drawing. You might even come up with something that will change the shape of the modern art world. Even if that does.