Remember, you can use deepdanbooru tags to generate good prompt for waifu diffusion img2img prompt.

Protip, I made a stable-diffusion-webui fork which integrates DeepBooru.

https://github.com/Greendayle/stable-diffusion-webui
Automatic Installation on Windows:

 Install Python 3.10.6, checking "Add Python to PATH" (Add Python to enviroment variables)
 Install git.
 Download the stable-diffusion-webui repository, for example by running git clone https://github.com/Greendayle/stable-diffusion-webui.git
 Place https://huggingface.co/hakurei/waifu-diffusion-v1-3/blob/main/wd-v1-3-float32.ckpt in the models directory.
 Run webui-user.bat from Windows Explorer as normal, non-administrator, user.
 
Put your vrchat screenshot to img2img, press "Interrogate Deepbooru" -> get good starting prompt. Don't forget to reduce noise reduction to 0.5 and turn on "Crop and resize".

Also negative prompts like

((((ugly)))), (((duplicate))), ((morbid)), ((mutilated)), (hermaphrodite), [out of frame], extra fingers, mutated hands, ((poorly drawn hands)), ((poorly drawn face)), (((mutation))), (((deformed))), ((ugly)), blurry, ((bad anatomy)), (((bad proportions))), ((extra limbs)), cloned face, (((disfigured))). (((more than 2 nipples))). [[[adult]]], out of frame, ugly, extra limbs, (bad anatomy), gross proportions, (malformed limbs), ((missing arms)), ((missing legs)), (((extra arms))), (((extra legs))), mutated hands, (fused fingers), (too many fingers), (((long neck)))