Flickr research result (1st. page). Chosen images are in water-green.
step 2 of 6
For background I selected, copied, pasted and duplicated part of one of the images, merging layers.
step 3 of 6
Blurred background; copied, pasted and masked the tank.
step 4 of 6
Blurred the tank; the same texture used for background I used for road, applying some smart sharpen filter.
step 5 of 6
Copied and pasted the robots; adjusted the road again now with blur in the same amount of the tank.
step 6 of 6
Added the spider robot; duplicated it and applied motion blur; using pen tool drew the web string. Selecting parts of the string, applied gaussian blurr in different amounts. Other details (shadows, blurring) applied after.