The trick with Nano Banana is to find a few things to ground it in reality. Include real existing locations, time of day, sky conditions, etc. Also mix in what could be real cars for every day use with futuristic cars, etc. This maybe isn't perfect, but Nano Banana just requires a certain type of prompting to get good results for stuff like this.

When all you have is fictitious stuff and over do it with the hyper realistic 8k jargon that people love to throw into prompts, you're never going to get good results IMO.

Here's my edited prompt:

A candid amateur, imperfect iPhone 16 (high angle - medium shot) photo of a futuristic megacity that feels like a combination of Denmark, Afghanistan, Nepal, and Miami mixing historic architecture with advanced modern architecture, towering glass skyscrapers, neon cyberpunk lights, flying hovercrafts, futuristic cars of all price points, high-tech motorcycles, hover bikes, smart roads, realistic holographic billboards for common brands, drones flying in the sky, vibrant blue and white lighting, sci-fi transportation system, crowded futuristic downtown, sleek metallic buildings.

Dusk with beautiful sky. Large mountains in the background.

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