Duplicate the layer and rotate the image, to make the fire from behind the building
Step 18 – Reduce Opacity
Change the opacity of the layer to 55%
Step 19 - Decay
Add some texture to the buildings, for this you can use images or brushes or also mix both. For the front wall you can use an image, place the image and reduce the opacity so you can see underneath that layer.
Then create a layer mask and hide most of the layer just leaving some of those holes in the wall like this:
Change the layer to soft light and reduce the opacity to 70%
Step 20 - Cracks
For the city buildings far away you can use crack brushes with a layer in soft light mode, you can change the opacity of the layer and also of the brush to get better results.
Step 21 - Fog
You can add some dark fog in the bottom of the buildings to blend the image. The brush can be set at 40% of opacity. Also you can change the opacity of the layer to 70% or 60% if you think is too strong.
Step 22 – Painting fire
Now paint some flames on the top of the buildings, use orange and yellow tones to create the flames, you can start making some lines like that
Create a new layer and create bigger flames and with less opacity, you can set your brush to pen pressure or use it at 30% use a soft round brush
Now pass the blur tool to it, to the first ones you made also you can use the smudge tool
Add more blur and also create a new layer and paint more around the flames, reduce the opacity of the layers to 60% and you will have something like this:
Step 23 - Shadow
Add a new layer and paint with a soft round brush to paint at the bottom of the buildings.
Also add shadows over the buildings too.
Step 24 - Reflection
Now pick a yellow tone and a fine brush can be 5px and paint in the edge of the wall to create the reflection from the fire behind
Step 25- The model
Place the model at the image and select all with the magic wand tool or the lasso tool
Step 26 – Layer mask
After you have the selection create a layer mask and instantly you will have only the model without the background
Step 27 – Gas Mask
Repeat the process before to cut the gas mask, press ctrl+ T to change the size of the mask to fit the model.
Step 28 - Helmet
Pick the same color of the helmet pressing ctrl+ I and then in a new layer paint over the star and reflections of the helmet.
Step 29 - Radioactive
In the model’s weapon paint with a brush a radioactive symbol, use layer in overlay mode.
Duplicate the symbol and put it in the model’s shoulder change the layer mode to divide.
Step 30 - Bullets
Add some bullets repeat the process you did with the mask and duplicate the layer ( ctrl+J) to have 2 bullets.
Step 31 – Dirt
Create a new layer and with a chalmy brush paint over the model’s skin with a dark brown tone to create dirt. Go to the brush menu and click the option shape dynamics, use size jitter in 10% and Angle jitter in 82% Also use the spacing in 90%