The reference family of preprocessors in ControlNet allow you to quickly transfer a style from an image in txt2img or img2img mode. I will demonstrate how to use it in txt2img.

  • download this image. I chose the 853x1280 size. We will use it as our ControlNet Reference image.

  • setup your ControlNet tab like this.
    ControlNet setup
    If you wonder what is the difference between the reference preprocessors, you can find more info here

-add a prompt close to the style of your image. Very important, set the CFG to a low value (3,4). Otherwise, your result will look very dark and overcooked. This is my settings:
text2img settings

Try to keep the aspect ratio of the original image but do not hesitate to experiment.