As close as I can get, but personally unsatisfying

Impressionism is a broad concept in painting. And I have a particular attachment to a narrow spectrum of it. Unfortunately, I don't think I can teach it to the Flux model. This is definitely a LoRA capable of rendering a kind of impressionist painting. Sometimes the images are decent, other times the colors are muddy and the mark-making clumsy and random. But I've tried quite a while now to teach it what I want and am calling it quits. I'll find another style to train.

To my taste, the SDXL LoRA turned out much better.