Glad it is working well for you! I think it works well because the AI has thousands of historical photos with this sort of "aging" to help make the effect look nice.
If you add words like "gritty" it helps not get such "clean" looking images as well.
I'm lucky enough to be able to run Flux (the latest model in the Stable Diffusion ecosystem) that can be run at home with a beefy graphic card. There is a big step in quality.
Here are some unmodified (ie, prompt only) images, of Dall-E level of quality (not the prompt, that's me being bad at describing in English, but technologically).
And this one, in which every detail mattered (these images were made to illustrate campaign journals, both D&D and a Sci-Fi one shot (we couldn't save our poor captain from the space pirate lady...)
Newer models like Flux and (especially) AuraFlow have made huge progress in matters of prompt adherence. The Cannith submarine was definitely repaired inland (we had been thrown by a kraken on the paradisiac island...) each details of the flying-fire-breathing-cat-with-an-aviator-helmet scene is prompted for and needed and so on...)
I'm lucky enough to be able to run Flux (the latest model in the Stable Diffusion ecosystem) that can be run at home with a beefy graphic card. There is a big step in quality.
I was able to use flux on nightcafe for free to do three generations the prompts were both : "(((full body visible))) 20 yr old woman with pink dyed hair dressed as an assassin in a burning factory, intricate, highly detailed,8k ultra-realistic, colorful, painting burst, beautiful symmetrical face, a nonchalant kind look, realistic round eyes, tone mapped, intricate, elegant, highly detailed, digital painting, art station, concept art, smooth, sharp focus, illustration, dreamy magical atmosphere,4k, looking at the viewer