Metal punch, free instruction. Choose the pattern you wish to punch from the pattern menu at the bottom of this page. The large dots indicate where large holes should be punched and the small dots indicate where small holes should be punched.
Trace place a thin sheet of paper over the design and trace it.
This will preserve the pattern. Tape tape the traced design to the metal surface you wish to punch securing with masking tape. Place the metal on cardboard or a stack of newspapers. Punch select the nail size depending on the size of holes your pattern requires. The force with which you hit the nail will affect hole size.