I was asked many times for this illustration. I had no lie for what I did it. Many asked me more for hair illustration and heard they like that part so much. I did and make thiner at hair lines and Wrap Tool for wavy hair style especially at the hair around ear. I used Guassian Blur mostly in Illustrator to get more realistic at make up effect and some other photo realistic effects. The more you can adjust at Guassian Blur you will be Master in Illustration.
Original Source at my Portfolio web site: