Samira

Hi! So for the background I can't help at all sorry, however for the hair this is what I would do. Here is a few tips: think of hair as a clump of thinner or larger ribbons. If you know how to render ribbons you have the bases for hair. The only thing is that hair is shiny and actually made of many hairs. To show that we need to make the lights and shadows follow the direction of the hair with multiple strokes. For instance it's more obvious on the shadow you put for the hair at the left of the face. The shadows follow the shape of the side of the face indeed but it should be indented to show that the plain under it is not just flat but a bunch of hairs. Hope this is somewhat helpful :}