Heres the link.
My replica of an Altoids tin completed
Step 1: Modifying
Use pliers to stretch out the paper clip.
The use scissors to cut of the side marked in the picture.
Also drill a hole where the little image note tell you.
Step 2: Making the hinge
The put it through the 2 holes you drilled.
Now solder on the lid tho the paper clip ends.