Paint your mache decoration with copper paint and leave to dry. You may need more than one coat.
Quickly sprinkle copper glitter over the glue section and shake off any excess. Leave to dry.
If you want, you could also highlight the edges of the shapes with glitter as well as/instead of the front.
Carefully cut out your template using scissors. Check it fits neatly on the top of your mache shape and trim edges if necessary.
Paint a thin layer of PVA glue on the top of your mache shape, then lay the paper cut out on top, removing any air bubbles from under the paper with a brush.
Gently paint another thin coat of glue on top of the paper, taking care to make sure it does not rip or move. Leave to dry.