Flux is notoriously bad at creating anything which is lying down. The only pose I got was lying on the stomach and then the feet are wrong. I tried first to do a all-in-one solution, but after a lot of testing I had to hammer each pose into a separate LoRA.

I also noticed that you have to use a <lora:LyingOnSide-150:1> tag, otherwise it is more or less chance if it will influence your image. The trained sentence is "lying on her side". Here the two variations are actually in one LoRA, but with less control: more propped op or lower, with the face resting on the hand. You can try "her head ist resting on her hand" or "is leaning on her elbow" , that was my captioning scheme.

Something I started here but had to be placed too in separate LoRAs to work is a finer control over face angles, body angles, camera angles and image area. But starting with this one, the captions are consistent as a preparation, even if they do not (yet) work standalone. The scheme is:

Face angles:
Full face view | Three-quarter face view | Two-third face view | Profile face view

Body angles:
Front angle shot | Three-quarter angle shot | Side angle shot | Three-quarter rear angle shot

Camera angle:
High camera angle | Eye level shot | Low camera angle | Shoulder level shot | Cowboy shot | Ground level shot

Image area:
Full-body portrait | Three-quarter-body portrait | Half-body portrait | Quarter-body portrait

It would be great if I get this to work!