Roll out your modelling clay so it's very thin, and glue it on the trunk as shown. Each edge is covered, and two in the middle. I also used the edge of a credit card to pinch the bands where the trunk lid would open and shut. It's okay if it looks a little rough - these trunks are old and beaten up.

Glue these on and let it set. When you're letting it dry, prop the trunk up on something thin so that the clay bands won't flatten out before they dry.

Next, mix together paint to make a tan colour and paint the bands. I used scotch tape to make sure I didn't accidentally paint the maroon part of the trunk. Let that all dry.

Lastly, take your keyhole pieces (or aluminium foil) and glue those on as the hinges and front clasps. I turned one sideway in the middle and added a tiny finishing nail to look like the lock.