I used Curves to add some light yellow to the scene:
Increase the scene saturation with a Hue/Saturation adjustment layer:
On this layer mask use a soft black brush to erase the model legs, arms, head and the ground:
Enhance the color and light of the scene with Vibrance:
Here is the result on its layer mask and on the picture:
I used Hue/Saturation to correct the color of some leaves on the right of the ground and add more cyan to the scene:
On this layer mask use a soft black brush to erase the parts we don’t want to be affected in this step:
Final step: Make a new layer with the same settings in the step 33 but uncheck Clipping Mask option. Use the Dodge Tool to brighten the trees on the left edge as they need more light.