This workflow uses JSPaint to sketch a input image that is used by Controlnet.

Inputs :

• JSPaint image (install node : https://github.com/doomy23/ComfyUI-D00MYsNodes)

• Seed

• Steps

• CFG

• Size and batch size

• Models (load whichever you want and Canny or Sketch)

• Controlnet weight

• Prompts

Output :

• Upscaled canny image from the original in JSPaint

You can also tweak :

• The KSampler settings

• Do better upscaling and postprocessing

• Change outputs

Don't forget to install the missing nodes and the one mentioned above for JSPaint.

This workflow can easily be used for SD15 and Flux.1-Dev as well if modified properly.