Instructions
Start your copy of "LittleBigPlanet" and open an editable level. You can start a new level or continue working on an existing one.
Create a square of glass using the "PopIt" tool, and place it somewhere on the level.
Shrink the piece of glass using the resize tool. Make it small enough that you can still see it, but smaller than your Sackboy character.
Enlarge the piece of glass to a ridiculous size, approximately four or five times the height of your character. Large enough that you can still manipulate it.
Use the cut tool to slice off a corner of the piece of glass. Just a small sliver, around the same size as the piece of glass when you shrank it a few moments ago.
Delete the rest of the chunk of glass, all except for the small sliver.
Select the sliver and enlarge it to around the size of the original piece. Repeat the process of cutting off slivers and enlarging them until your piece appears very shiny and reflective.
Change the material to tinfoil to make a shiny metal mirror.