Things you need:
- rubbing alcohol (isopropyl alcohol)- the higher the content the better; I used 91%
- toothpick or other tool to crush and smooth the broken powder
- cloth to press the powder, and a coin if one will fit nicely in the shadow pan
- The broken makeup
Then, use the toothpick to evenly distribute the powder in the pan. Try not to spill, but if it's a new product, that is hard to do!
Add a few drops of rubbing alcohol, and mix the powder with it until it makes a paste. Add more alcohol a drop at a time, if needed, to create the paste. You want the powder to absorb all of the alcohol, with no puddles in the pan, and no dry spots either.
Smooth out the paste with a toothpick as best you can. It doesn't need to be perfect, but try to evenly distribute the paste in the pan. This will make the pressing easier.