Tony Moore: Hi, I am Tony Moore with Fraser Street Publications. Today we are showing you how to use an airbrush and in this segment, we'll be showing you how to airbrush a geometric shape with shading.

We've already cut out our shape out of the frisk masking film. First, we have to determine where our light source is going. Then that also determines where our shadows are going to go. Press down once again with your airbrush, with your trigger to start your airflow. Then pull back for paint and gradually fade your paint around in a circular motion all the while realizing that the top part of your shade is going to be the lightest part, the darkest part is going to be at the bottom where the shadows are going.

Gradually build your paint as you go, working your way towards the center of the shape. Now, the lightest part of this ball is not going to be right on the edge. It's going to be right in this area here. So that's what we are working towards.

Remember those fading exercises that we did before. Hold your airbrush approximately eight inches from your board so that you can get a nice, even spray. Keep in mind that you want to render a three dimensional object. Your object becomes more than a flat surface now. You want to really create that illusion that you actually have a sphere or a globe. Keep building your ink in a semicircular motion.

I think we have it. In our next segment we'll be removing the mask.