https://yodayo.com has a lot of great models based on Pony Diffusion 6 XL, and had high res fix. This was made with my normal prompt on the website.

"Abuse of Power"

Twilight Sparkle smiled to herself as she thought, "the restricted section is keeping people looking away from my own personal stash." She unwarded the portal to XS_x10K, a Microverse where the population was over 10,000 times smaller than her. The tiny residents had declared her their supreme Goddess and she decided it'd be a perfect experiment. She demanded a Highway of Sacrifice be made, and upon her return, 100,000 micros would be sacrificed to her. She decided to play up the "Goddess of Death" role and dressed in "Dom Goth" as Cadance called it. In the month she gave them to prepare the sacrifices, she had spend time toning up with Rainbow Dash. She strolled through the portal.

As she strolled across vast distances with a few steps, she made sure she wasn't going to step on her sacrifices, but paid little heed to anything else. She had to play the role of uncaring Goddess well, or they wouldn't think she was serious. Finally eying the small highway with a large (to them, about an inch to her) Temple. Straddling the temple and highway, she purred, "this is better than I expected, slaves, sacrifices, your task is to crawl... in here", she thrust her crotch forward and back, causing huge earthquakes. Beneath her knees, hundreds of thousands perished, to small to even notice. She wasn't expecting it to feel so good. These Micros weren't just smaller than her, they were fleas at best, microbes at worst. She was bigger than mountains, she could stand in their oceans, she was a Goddess. She was now past the point of horny and declared, "everyone in the cities move to the temple... I'm not going to be careful. I'm not going to take care. Your cities will probably be dust on my as by the end of this. If you value your miniscule lives, you crawl into your Goddess and watch as I judge your tiny, worthless, world."