Return “Scale” to 100%, hide a sky and background layer and prolong the cropped part of the crane. At now work with a stamp is completed. Perhaps you have noticed a red construct on the right side of the image. I did not sketch it because it kind of does not prevent the whole picture, but if you wish, and you can restore it.
Add shadows to objects. Select boxes again (Cmd/Ctrl + click on layer thumbnail), create a new layer above stamp layer and fill selection with black color ( press D, X and Cmd/Ctrl + Del). To deselect use Cmd/Ctrl + D. Flip a shadow vertically (Edit > Transform > Flip Vertical) and add a filter “Gaussian Blur” (Filter > Blur > Gaussian Blur…). Set Radius around 5.0 pixels and apply filter by clicking OK. Set layer Opacity to 25%.
Duplicate this layer (Cmd/Ctrl + J). Now transform both layers with Distort Tool (Edit > Transform > Distort), first shadow should be a little closer to the box, and the other to go beyond the image (sure to keep in mind that the shade should be a slight tilt). Merge these two layers (Cmd/Ctrl + E) and on this layer brushed between boxes and asphalt (Size: 150px, Opacity: 20%). On this layer, draw a shadow near the ship and containers.
Now create a basic color scheme for picture. Create a new adjustment layer “Brightness/Contrast” over the group “Port” (click on “Create new fill or adjustment layer” icon “Brightness/Contrast”). Change Brightness to -40, Contrast to -5.
Add another adjustment layer – “Color Lookup”. Set checkbox on “3DLUT file” and in list, select “NightFromDay.CUBE”. Set for layer Blending Mode “Hard Light” and Fill to 40%. Basis for the night is created, we can continue a photomontage.
Create a new group (icon on the bottom of Layer panel), name it “Assault”. Place “Soldier 1” image and resize it so that would be a soldier was not a big than box (his helmet should be higher than the box). Use Pen Tool (P) to create a flat path of soldier. When you are finished add a vector mask by using “Mask” button in the upper settings panel. Repeat the same with the second soldier and helicopter.
Second “Soldier” image place a little closer and make it a little bigger (to create the dynamics of movement). Also flip the image horizontally. Now the helicopter. Place it as shown in the figure below. After removal background, convert this layer to Smart Object (right click on layer > Convert to Smart Object. It is necessary to blur filter is not spoiled a mask), then add a filter “Motion Blur” (Filter > Blur > Motion Blur…). Change Angle to 40 degrees and Distance to 16 pixels. To give realism, remove with Brush Tool (B) on the filter mask effect with the front of the helicopter.
Use Step 9 to create a shadows from soldiers (the principle remains the same). The main thing is not to overdo it and do not shade too bright and hard.
Once we have a night scene, it would be very good to create lighting. Create a new group and layer into it. Each lamp consists of three phase of light – major source (Size: 20px, Opacity: 100%), glow (Size: 50px, Opacity: 30%), diffused light (Size: 100px, Opacity: 30%, drawn brush edge from the center of light source). With Brush Tool (B) (soft round brush, color: #ffffff) draw light on the previously described scheme. Reduce the size of the brush to distant lights. You can also make the signal lights on the ship reds (#ff0000).