First thing I did was to take it out of my palette and place it on a clean surface (preferably one that you can wipe down after your finished in case you spill anything)
Then crumble the broken fragments into a fine powder (the finer the better) just try not to spill any over the sides of the pan.
Next comes the alcohol ;) technically any type of alcohol would work so long as it has a high percentage but the higher the percentage the better. So I opted for surgical spirits- or rubbing alcohol if you’re from the U.S. (the lower the alcohol content the longer it will eventually take to dry) Just pout a tiny bit in the lid.
Then.. the trick with this is to apply as little as you can to make the shadow into a paste (the closer to a liquid it is the longer it will take to dry and it might not set properly)
Make sure you also have a coin that fits the pan (for mac & urban decay a 2p works perfectly) and have either some tissue or scrap fabric ready for the next step...
This is perhaps the only remotely tricky bit. Take your coin and wrap it in the cloth/tissue as tight as possible, then press the coin into the shadow to ‘set’ the paste.
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This may take a few attempts if this is your first go but... then you're done!
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Simply pop it back into the palette to dry and you’re all finished :)
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Mine only took about an hour to dry but I tend to leave them at least overnight just in case!