Girl Wearing Hijab

Hi I have done this painting of "Girl Wearing Hijab" on a "16 x 20" inches canvas, using oil painting as my medium.
I first sketched the subject on my canvas using charcoal, and blended in the base colors with a thin mixture of oils, basically using olive green for the exposed area of the face and dark blue and green for the background and head piece.
When that was dry I started painting from left to right firstly using a shade of burgandy, oil painting scarlet red and ultramarine blue. I painted the head piece using a mixture of viridian,emerald green, yellow ochre, orange and some yellow.
The skin tone on the face was done mixing together some burnt sienna, yellow ochre, and zinc titanjum white. The darker areas I used some burnt umber. I gently blended the colors with a nylon flat brush and in some areas I just used my finger. The eyes were done in white, ultramarine blue, pinch of burnt umber, and black.
This painting took me approximately eight hours to complete...I thank you so much for the opportunity to show my work on your website, and your lessons are very very helpful, thanks a million via http://oilpaintingbank.com