Start very light.
Here I start very light and slowly build up to my target color.
You will never regret being to light because if you get to dark too quickly and over shoot your target color you will have to lighten the color which takes time. I will address this in detail in a later post.
This is a step by step photo realistic portrait in black and white of Scarlet Johansson. I do not know who the photographer is in order to give him or her the proper recognition. This is strictly a demo piece. Remember if you chose to do portraits taken by photographers other than yourself there are copyright issues. Artists and photographers own the intellectual property rights of their work. This is a sketch on Schoellershammer 4g illustration board designed specifically for airbrush. The paint I used is Createx Illustration Colors.
Art is in the Air, Inc. 