It tries to place your character in one of the standard wallpaper positions - left, right or center and free up space for your desktop icons. Sometimes it fails.
Important disclaimer. You might not need this LoRA with some models, since they give pretty decent wallpapers with "official wallpaper" tag.
This LoRA also works with Pony models. It gives different result compared with original LoRA. It's pretty subjective which is better.
If you want to leave review, please, write few words what worked for you and what not. And post pictures - successful and not. Otherwise I have very little resources to excessively test and improve