Choosing the right airbrush paint for an airbrush gun will depend on the size of the hole in the airbrush tip and the viscosity of the paint. A standard siphon airbrush generally requires paint that is thicker than milk or water. Consider getting a gravity airbrush for very thin paints with information from a professional airbrush artist in this free video on airbrushing. Expert: Mark Chandler Bio: Mark Chandler owns Mark’s Custom Airbrushing in St Petersburg, Fla. Filmmaker: Christopher Rokosz Video Rating: 4 / 5