Step 01:
Key out green screen and mask the girl's surrounding, only revealing the girl
Step 02:
Add background
Step 03:
Colour grading
Step 04:
Duplicated the girl and made it into a 3D layer
Align it to the ground, and tracked the girl
Decrease brightness and made it blur to make it the girl's shadow
Step 05:
Added vignette
Step 06:
Added yellow light
Step 07:
Added Smoke
Step 08:
Duplicated the composition on top of the original one
Change blending mode to overlay
decrease opacity
Step 02:
Add background
Step 03:
Colour grading
Step 04:
Duplicated the girl and made it into a 3D layer
Align it to the ground, and tracked the girl
Decrease brightness and made it blur to make it the girl's shadow
Step 05:
Added vignette
Step 06:
Added yellow light
Step 07:
Added Smoke
Step 08:
Duplicated the composition on top of the original one
Change blending mode to overlay
decrease opacity