Made this for a weekend challenge, rendered with Cycles 256 samples + denoising + compositing, procedural textures, no volumetrics involved, effects and finishing with GIMP. Second image is the post-pro steps, third one is viewport screenshot.
DUDE this is cooler than I thought! Because at first glance…I thought it was a zeppelin lol! I like the old (with the planes) and modern (with the ship) clash. This is an epic image!
Thanks man! The topic is ‘anachronism’ which basically concerning objects which are out of place chronologically, so hence the ‘clash’. 
I can’t wait to get this good. Really nice work!
Thanks! Be patient, keep on learning and blending, and I’m sure you’ll able to make an even far better one than this 