Duplicate the hair 1 layer. Move the duplicate to the lower position at the model’s back. Take the Free Transform tool (Ctrl+T) and warp the duplicate layer to alter its shape.

Select the original hair 1 layer and give it a layer mask (layer > Layer mask > reveal all). Mask some hair in red highlight.

Mask the duplicate layer as well to hide the hair on the left arm.

Step 8

Create another new layer (Shift+Ctrl+N) between the original hair1 and the duplicate layer. Name this layer, say, hair 2. Using given paths, paint highlight of the hair by stroking the paths. Use the color of #8e2c10.

Set this layer to normal at about 8-10% opacity. This will give a reddish brown highlights to the hair.

Step 9

Now create again a new layer above all the other hair layers. Name this layer, say, hair 3. With a smaller brush with a size of 3-4 pixels and color #662f16, stroke the path to paint more highlights.

Given this amount of color, set this layer to normal at 5-7% opacity. This will give more highlights to the hair.

Step 10

Finally, create another new layer above the hair 3 layer. On this layer, stroke the same paths with a smaller brush of 1 pixels with lighter brown color.

Given this amount of color, set this layer to normal at about 15% opacity.

In a similar way, create more hair strands to the model.

Here is the result so far. Select the model and all the hair layers. Hit Ctrl+E to merge them into a single layer. Name this new layer, say, model.

Step 11

Proceed to give this model some retouching on the skin and dress. Go to filter > camera raw. Prior to giving it the filter, convert this layer into a smart object by going to layer > smart objects > convert to smart object. Use the value below:

Given this values, the result should be like this:

Hide the effect of this filter on areas around the hair by masking the filter.

Step 12

Now we will do some color adjustment to the model to make it be well blended with the whole scene. Firstly, we give it a new fill layer with a clipping mask. Go to layer > new fill layer > solid color. Use the color of #01848c.