Recommended settings:
Make sure you are aware on the usage instructions of LORA
Sampler: DPM++ SDE Karras (Recommended for best quality, you may try other samplers)
CFG Scale : 5 to 10
LORA weight for txt2img: reccomended 0.3-0.7.
Keys: wearing biker_jacket
Very simple to use, just use the keyword.
If you don't specify any color the jacket will be black, but as i did in my generated images you can prompt somthing like "wearing red biker_jacket" to have a colored one, it might need a weight on the keyword, i used 1.3 in my images.
Enjoy!