This is a fun way to get the look of metal working and a bit of a relief with simple materials and tools.
1. sketch a design onto cardboard
2. outline the sketch in glue
3. add yarn on top of the glue and let it dry
4. cut a piece of foil big enough to cover your foil and wrap around the back
5. crinkle the foil and then flatten it back out a bit
6. add white glue to the back side of the foil and then paint it on in a solid layer with a wet flat brush
7. cover your cardboard with the foil, you can use a pencil eraser, fingers, or cotton swabs to form the foil to your relief. Be careful not to rip the foil, take your time making sure the glue has a chance to stick to the card board. Wrap the extra foil around to the back of the cardboard and secure with tape.
8. mix acrylic paint with a bit of liquid soap to help it stick to the surface of the foil a little better. Paint the mixture on top of your foil giving it a "patina".
9. Before the paint dries completely, wipe off the highest points of your relief and leave the paint in the nooks and crannies of the design.