Creating/recreating

In an attempt to know, learn more about colours I have been working on the painting above. I am using a drawing of Natalie I feel has a strong structure as a basis, then building up the colour relationships with colours I found/witnessed (whilst painting 'Extended darkness'). I split the painting into two halves with the figure being affected by three different sources: the pink band on the right, the dark on the left and the light source that hits the breast plate of the figure. I am trying to be responsible for every coloured area of the painting as each part affects the other. The painting is not finished so I shall keep my progress posted-the face is my next hurdle!