Two quick observations:
Warhammer 40’000 is a comedy dressed up as a tragedy.
My step-brother, at age 11, earlier this year pointed out that this artwork looked like a mix between Mad Max and Star Wars. He is not acquainted with Warhammer 40’000 yet, and his summary of that Imperial Navy battleship’s aesthetic is the best description to outsiders that I’ve ever heard anyone come up with for 40k. I’ve seen a lot of good descriptions of the 40k setting, but nothing as concise and accurate as his observation.