I used 11 layers to add falling leaves on the hill:
Group them and call it “hill”.
Make a layer inside the “hill” group, and place it at the bottom. Use black brush with very small size (2-3 px) to paint under the leaves lying on the hill to make shadow for them:
Take another leaves and arrange them around model, cave, underground. I applied Gaussian Blur with 3 px for some bigger leaves to create depth to the scene.
To the leaf on model feet, I made shadow for it with Drop Shadow effect. Double click this leaf layer, choose Blending Options:
I used Curves with Clipping Mask to darken and brighten some separate leaves (darken the one inside and brighten the ones outside the cave).
Group all the leaves layers around the cave, name it “cave”. Create a Curves layer to darken all of these leaves:
On this Curves layer mask use brush to change lightness of them. I meant to keep the ones inside the cave darker and the ones outside brighter:
I added a Curves layer with same purpose:
Group all groups “sky”, “hill”, “cave” and change the mode to Normal 100%. Make a Hue/Saturation layer to change color of all the leaves in these groups:
Add another Curves to darken more some leaves at the lower positions:
Apply masking job with leaves around the hill, sky:
Use Levels to brighten leaves at the higher positions:
Apply layer mask brushing :
Make leaves selection as done with branches heart (step 66).
Make a new layer on the top. Load leaves selection (as done in step 53) and click Add layer mask button. We have result on its layer mask:
On this layer use a light yellow brush color ( I chose #ebb356), opacity about 50-55% to give some light to the leaves in the sky part. You can see the parts I painted below:
Create a Gradient Map layer on the top:
Change the mode of this Gradient Map layer to Soft Light 100%:
Add a Color Balance layer:
Erase the left of sky on layer mask:
Make a new layer on the top. Hit G to active Gradient Tool. Choose Radial Gradient with default colors (black and white). Drag a line from the top to bottom to get this result:
Change the mode to Soft Light 100%. On layer mask I erased the parts below as they should not be too dark:
Continue with a new layer and soft black brush. I lowered opacity and flow to about 10-25% and painted on some parts below. Change the mode of this layer to Soft Light 100%:
On a new layer, use brush with color #faa560 to paint on the top center of the sky. I altered the mode to Overlay 100%:
Add a Photo Filter on the top:
More with Gradient Map:
Put the mode of this Gradient Map to Soft Light 50%. Erase all the bottom half of the pic:
I used Color Balance again :
Erase the top of the pic: