>>11333485
this would probably be one of the best use cases for Inpaint Sketch
not just the inpainting feature and not just the sketch feature
if you use sketch inpainting to place the piercings and then just immediately prompted "silver piercings" it'll take your little grey dots or whatever and make them look like silver piercings
with the right settings, i.e. denoise strength
this might be the best you could hope for to get exactly what you want, assuming it's not the varying styles and placement from the model that you're looking for

unless i'm wrong. i could always be wrong.