Use Dodge and Burn Tool (O) with Midtones Range, Exposure 20-25% to brighten the top of left and right shoulder and darken the edges. You can see how I applied this tool with Normal mode and result with Overlay mode:

Step 18

Open vines stock pack. I choose number 1 to put onto the top of left shoulder and different parts of number 11 to arrange over the two arms. Use layer mask to remove parts outside these areas and blur some details to get more natural look:

Step 19

Extract branches 1 from the background. I take different parts of them to position around model head, duplicate, transform, use layer mask if needed to achieve a random look:

I used 10 layers for this effect.

Step 20

Create a new layer under branches ones. Use soft black brush with low opacity (about 20%) to paint shadow of the branches on model body:

Step 21

Make group for these branches layers, set the mode to Normal 100% and call it "branches 1". Also change the name of them from 1 to 10. Make two Curves and a Photo Filter layers to change contrast and color of these branches:

On the first Curves layer mask I erase the left side to keep it brighter than the right. On the second I erase the right to make them darker:

Step 22

Drag the nest into our picture, downsize and warp it to fit the model head:

Step 23

Use Curves and Photo Filter (Clipping Mask) to make contrast and change color of the nest:

On Curves layer mask , erase the right side to make it darker than the left:

Step 24

Open branches 2 stock and isolate them from the background. I take different parts and position them at the two sides of the picture:

Step 25

To add depth to our picture I apply Gaussian Blur with 4 px for these branches:

Step 26

Make group for the branches (I call this group "branches 2"). Add Curves and Hue/Saturation to this group:

Brush over the left side to keep it brighter than the right:

Step 27

Create some adjustment layers on the top to change color of the whole picture. I use Hue/Saturation, Gradient Map, Color Balance and Photo Filter:

Change the mode of this Gradient Map to Soft Light 100%. On Hue/Saturation layer mask I use brush to erase the left of the model to keep it more vibrant than the rest: