Have you seen the img2img results? You draw kind of a crappy Microsoft Paint style image, give it some text for how you want it to actually look, and it does the transformation.

For example: https://www.reddit.com/r/StableDiffusion/comments/wwgge8/ano...

Consider also this example of someone splicing Stable Diffusion into a proper image editor and using a combination of img2img, text to image, inpainting, and normal photoshop tools: https://www.reddit.com/r/StableDiffusion/comments/wyduk1/sho...