Lora created to render a specific pose, subject on back with a very arched back.

Example prompt (PonyXL/Illustrious):

beautiful, detailed, masterpiece, best quality, absurdres, 8k, HDR , very aesthetic, intricate details,adult woman, , 1girl, looking at viewer,
hrbodybridge, on back, lying, arched back,
dark green cropped t-shirt, , indoors, coffee table, on floor, arms up, , armpits, dutch angle, red lips, teasing, makeup, eyeliner, adorable eyes, eyelashes, eyeshadow, red lips,
simple background, blurry background, auburn hair, short hair, hair between eyes, blue eyes, from front,
<lora:hrbodybridge:1>

Example prompt (Krea2):

A high quality modern pin-up drawing of a beautiful, slim woman. She has black hair slicked back into a neat bun.  Image from the side, she is kneeling, on her back, doing a backbodybridge, she is facing away.  She is toned and fit with large  .  She is wearing tight  thigh boots, garter straps attaching them to  .  Her top is a front laced  vest.  She has a very arched back and athletic body, she is fit with a narrow waist.  She is in a photo studio.  She has smooth flawless skin, and delicate fingers with red nail polish.  She is a  adult woman in her 20s. The style of the image is a sleek modern graphic novel, with clean lines and smooth textures. 

Have fun creating!