Adding more and more details now with a very fine brush that is 4 to 5 pixel brush , and one thing to remember is to Zoom in too 400% - 500% while working on details.
Paint the base color first for hair so that it blends well with the skin tone, if we use directly the dark hair color it would look very hard in contrast to the skin tone that is it won’t blend properly and the hairs would look more like a wig instead of real hairs or may be like a cutout.
All the face and drape details have been worked out finally and we are nearing to finish the painting.
Blend the brown color I used for hairs with the skin color then painted over very dark brown and blend dark brown to the brown base color I used, so that hairs don’t look like a cutout. After that adding some details on hairs, I started painting a every single hair with one pixel brush and then used several different tones(dark to light) so that hairs look real.
Work in Progress Images in animation