MysticLight is a VTuber with a really adorable fox girl model. The lora turned out surprisingly well I think given the complexity of the character design with it having a tail and a lot of intricate details to it including constellations and crescent moons and clouds particularly around the tail. These details don't always turn out perfect, but a lot of the time it seems to be close. I have tags like 'ear constellation' for the constellation around the ear, 'tail constellation' for on the tail, and then 'tail moon' for the moon on the tail and 'floating moon' for the moon near the ear that sometimes can be an 'earring'. I also added tags for controlling the ears being up or down, and a tag for a black/red sort of recolor. There's also basically three-ish different outfits I trained for it. Anyway...

Clip Skip 2, Lora Weight 1

Trigger: vtmysticlight
Dark Mode Coloring Details: darkmodemystic
(Note: Consider adding 'black hair' as the hair color and 'red eyes' too. Maybe tag for a red gradient hair but it might not be necessary.)
Moons and Constellations: crescent, moon, crescent moon, constellation
Ear Position Tags: both ears up | single ear up, ear down | both ears down
Earring/Moon Near Ear: earring, floating moon
Constellation Near Ear: ear constellation
General: 1girl, solo, very long hair, ahoge, multicolored hair, gradient hair, white hair, blue hair, blue eyes, facial mark, breasts, medium breasts
Fox Girl & Fox Tail Details: fox girl, animal ears, animal ear fluff, fox ears, tail, fox tail, tail constellation, tail moon, tail clouds
Hair Options: hair over one eye | hair between eyes
Hair Flower: flower, hair ornament, hair flower
Facial Marks: facial mark, purple facial mark
(Note: 'blue facial mark' and 'black facial mark' also in training.)

First Outfit: cleavage, clothing cutout, cleavage cutout, sleeves past wrists, skirt, black skirt, pleated skirt, thighhighs, black thighhighs, thigh strap, thigh moon
(Note: 'thigh moon' is for the moon near the thigh strap.)
Second Outfit: choker, black choker, off shoulder, bare shoulders, shirt, off-shoulder shirt, white shirt, gloves, black gloves, elbow gloves, fingerless gloves
(Note: Maybe also throw in something like 'shorts, black shorts' here? Or the skirt tags. This one is more just the upper body. You can also use halterneck tags from the third outfit.)
Third Outfit: halterneck, black halterneck, shirt, off-shoulder shirt, bare shoulders, black shirt, dress, black dress, clothing cutout, navel, navel cutout, thigh strap
(Note: Can swap in 'white shirt' instead of black.)

Extra Fun Tags To Consider:
tail hug
fluffy
open mouth, fangs
glowing
sleeves past fingers
animal, fox

Possible Negatives? Might help if you don't want a starry sky being generated although I have no idea if these will also impact the rest of the details on MysticLight herself so use these at your own risk or maybe just some of them. Honestly I'd probably suggest describing something different in the background: sky, star_(sky), starry sky