How to transform an aluminium drink can into a charming little embossed metal box.
Here's the video version of the instructions:
Step 1: Clean off the paint
Using abrasive paper and/or steel wool, rub off the paint/printing on the outside the can. This doesn't have to be perfect, as tthis will be the inner surface of the finished box.
However, skipping this step altogether makes it quite hard to see what you're doing in subsequent steps.
By far the easiest time to do this is when the can is still full and sealed, because the liquid inside will support the walls as you press on them with the abrasive.