Step 1: Find A Picture
Step 2: Pixlr.com
Step 3: Creating A Look
First I'll click on the paintbrush, select the color black and brush size. I don't want the paint to be too dark because it'll look more like a crayon mark. If you bring down the opacity and make smooth strokes, you can layer paint on top of itself to however dark you want it. I'm also zooming in so I can layer the paint exactly where I want it.
Now it looks like I got in some crazy bar fight but you should see the other guy. I'll be using the same technique to make the skull nose. I made mine look like an upside down heart. I then took the white and did the same thing. Lowered the opacity and went over my face with white to get a paler look. Now to touch up with some gray...