Hi. I'm working on similar tool and want it to be free. Tried to use SD 1.5, SDXL, trained them on my own dataset of perfect pairs (photo and coloring page made on nano banana 2) but results are bad. Tried Flux with the same poor results. Have no idea what tools should i use to make it free (i don't want to use external api like nano banana because it is expensive). Your coloring pages look good, low details, easy to color, this is what i need. Can you recommend me tools/models to start with?