>>2766567The other anon kindly provided what you need to reproduce the image, but if you're interested in getting started with Stable Diffusion, don't be intimidated. You don't need anything else but SD and some model. I recommend AbyssOrangeMix3 or Anything V3.0.
At first you won't be able to reproduce the image style exactly, but you will still get decent results out of the box.
Generated images contain metadata that you can load in the png info tab of the webUI. You can use this to know how someone made an image. Unfortunately, 4chan strips that metadata, but catbox doesn't.