Welcome, I will link you guys to a organized PSD for a photo manipulation poster.
This PSD will run you through requirements for:
-Adding explosions and flames to a poster and blending it.
-Finishing touches for a poster.
Settings for a few things:
First, apply your image.
Then, go to Filter > Other > High Pass, make sure the setting is around 0-20.
Afterwards, go to Edit > High Pass > 50%. Set the blending mode to Hard light at whatever you seem fit. You can use other blending options as well.
Always put the Strength at 10 or 5. Put everything else at 0.
What you need to know:
-You need to know basic lighting such as grabbing a light brush and colouring over an object, with colour dodge, screen, etc.
-You need around 6-12 months experience on Photoshop at the least.
Note: It has all resources needed already, no need to download files above.