Try using Dall-e if you can get your hands on it. I'm not sure exactly what you want, but listing all the details and "oil painting by [insert Renaissance artist]" should give you something ok.

Midjourney only does one art style, and it's not oil painting. There's probably a Stable Diffusion model that can do what you want, but I don't know how to find it under the pile of models people made for anime, porn, or anime porn. But Dall-e is pretty good at pile of details + old art style (it'll ignore like half your details, so give it even more of them).