Fractals and Stable Diffusion?! Brilliant. Have you heard of the software Visions of Chaos? It lets you use a whole bunch of generative AI things (including Stable Diffusion) as well as fractal generators, all on your PC. It's a great starting point if you don't want to fiddle around with command line tools.
What model are you using for this? Is it SD 1.4, or 1.5?