"Unlocked" Sprite mask that that does not move with the overlying sprite?

Kind of like in photoshop when the clipping mask is not linked to the layer it's clipping to. To give you an idea, my character has an idle animation in the main menu, I want the tiny stars on her weapons to be attached to the background so that they do not move together with the weapons in the idle animation. At the moment they're just static sprites attached to the weapons themselves. Only the bigger stars should move with the weapons. Is this possible with sprite masks or can I use something else? When trying out a sprite mask it attaches to the weapons and I haven't found a way to unlock it. I'm using URP 15.0.1 Unity version 2023.1.0a18

 

Think I made it work, made two separate gameobjects, one containing the sprite mask and one containing the sprite renderer. Didn't occur to me that the mask and the renderer can be on separate objects.

 

don't think it works still, it's not preserving the transparency of the sword. do i need to do it with a material maybe?

 

got it to work, put the sprite mask on its own gameobject and attached it to the bones, but probably not the best way