This is the base prompt, and then I used a LOT of in-painting to add features.

parameters

(rear view:1.2), (looking back at viewer, looking at viewer:1.2),
(solo:1.2), female anthro silver fox, long fox tail,
(cum in ass, messy creampie:1.4), (cum flowing out of anus, cum on butt, cum on leg:1.2), (cum dripping down thighs:1.3),
(spreader bar, elbows together, wrists together, wrists tied, arms above head, arms straight, arms tied, bound:1.2),
Bent over a bondage-style frame, legs apart and secured, with hands bound above the head, paddle, nipple clamps, a collar, a whip, a cane, and electro-stimulation devices, displaying complete surrender, sensory stimulation, anticipation, ownership, surrender, control, and intense sensory play, (blush on butt:0.9),
pain, blush, arched back,
pussy, (engorged labia:0.8),
black hair, side cut, purple highlights,
(black body, white inner thighs:1.2), (black fur with white specks:1., (detailed green eyes, white sclera:1.2), (speckled body:1.0), (white freckles:1.2),
physically fit, tall, curvy,
digitigrade legs,
medium breasts,
gym storeroom environment, cold day,
by wildering,
by darkgem,

Negative prompt: duo, (signature, patreon logo:1.2), bad anatomy, extra hand, extra arm, detatched arms, white sclera, (bent elbows, bent arms:1.2), jewelled buttplug, cum in pussy, standing whip, short tail,
Steps: 50, Sampler: DPM++ 3M SDE Karras, CFG scale: 7, Seed: 1148689795, Size: 768x1024, Model hash: 821628644e, Model: EasyFluffV11.2, Variation seed: 3276781270, Variation seed strength: 0.2, Denoising strength: 0.75, Mask blur: 4, Version: v1.6.0