Thought this concept was simple enough to test regularization with, but there are three different kinds of rear SPH: one triangular, one triangular and one slit right under it or lower, so it usually generates all three. At least it doesn't ruin generation of real deer or add SPH to them.

To exclude SPH, try "rating_safe" in the positive prompt and "sph, rating_explicit, butt closeup" in the negative prompt, but it didn't learn well what "sph" means, so you can't be 100% sure.

You can't really add SPH to other characters without making them spotted: the inflatable deer has more spots than any irl deer the base model generates, and especially the real deer the prior preservation images were denoised from (mostly with prompts like "irl deer,outdoors"), so I guess the LoRA's "inflatable" includes spots. It can't deal with tails covering the butt.

The concepts had different repetitions and learning rates, and consisted of

• 16 source images, 23 crops: tall inflatable deer, smooth skin, feral, irl, tall neck, rear view, butt closeup, indoors

• 5 source images, 11 crops: tall inflatable deer, smooth skin, feral, irl, rear view, tall neck, butt focus, indoors

• 6 images: tall inflatable deer, smooth skin, feral, irl, tall neck, rear view, indoors

• 5 images: tall inflatable deer, smooth skin, feral, irl, tall neck, rear view, outdoors

• 3 images: tall inflatable deer, smooth skin, feral, irl, three quarter view, tall neck, outdoors

• 1 image, 2 crops: tall inflatable deer, smooth skin, feral, irl, rear view, tall neck, offscreen butt, close-up, indoors

• 5 subconcepts, 12 source images, 19 crops: sph,tall inflatable deer, smooth skin, feral, irl, tall neck, rear view, butt closeup, indoors

• 15 source images, 14 crops: sph,tall inflatable deer, smooth skin, feral, irl, tall neck, rear view, outdoors

• 2 subconcepts, 5 source images, 8 crops: sph,tall inflatable deer, smooth skin, feral, irl, rear view, tall neck, butt focus, indoors

• 3 source images, 4 crops: sph,tall inflatable red brown spotted deer, smooth skin, feral, irl, rear view, tall neck, butt focus, outdoors

• 2 images: sph,tall inflatable deer, smooth skin, feral, irl, tall neck, rear view, indoors

These tags were on very few images, but the base model knows some of them:

• front view, three quarter view

• portrait

• looking back, looking back at you, looking back at viewer

• inflatable princess celestia, inflatable tempest shadow, inflatable zecora

"lying down" and "lying on bed" generate one non-mutilated image out of six.