Things You'll Need
Instructions
Place the aluminum can lid on a flat surface. Using your hammer, gently begin to flatten the lid.
Slide the aluminum can lid under a sheet of notebook paper. Draw a ninja star outline within the size of the lid. This can be as complex or simple as you wish. Get creative.
Cut the design out from the notebook paper using scissors. Trace this design onto the aluminum can lid using a marker.
Cut your design out of the aluminum lid using the metal cutting shears. Discard the excess aluminum.
File down the edges on either side of each tip of the ninja star with the metal file. You may also take this time to sharpen the tips.
Decorate your ninja star with any desired symbol. Use markers to give it color or patterns.