PNG to Print Ready files with a separate gold foil layer for all the gold parts

I have nine AI-generated sticker designs saved only as high-resolution PNGs—no editable source files. Before they go to print, every element that should be stamped in gold foil needs to sit on its own... (Budget: $10 - $50 USD, Jobs: Adobe Illustrator, Brochure Design, Digital Art, Graphic Art, Graphic Design, Illustrator, PDF, Photoshop, Print Design, Sticker Design)