look, anon:
first, you generate your chunky towa wobble wagon with tail in negatives:
https://files.catbox.moe/3zxg42.pngthen, you open up paint, and scribble in a tail:
https://files.catbox.moe/nf4yfi.pngfinally, you take tail out of your negatives, put it in your positives, then inpaint as normal. i used 256 padding, inpaint area: masked only, resolution of 1kx1k, and denoising of .5:
https://files.catbox.moe/uqixxq.pngyou can do this for anything in any picture. (that is also how i added her thighhigh despite it not genning there either)