Blackmail scammers should never be messed with, nor should you ever go into skype conversations with them.
If it would help, we would be doing it, and we are not.
then somehow hacked my facebook account
You can also see how dangerous messing with them can be. These are criminals, and they know who you are, but you do not know who they are
nor who their associates are, and how far they might go to retaliate against you.
Messing with them only hurts victims of these scams. They try to scam 30/40 a day, and messing with them only makes them change their details, which is bad for victims looking to find help by searching for details.
We do not "catch" scammers.
Please read all posts here: Forum rules and frequently asked questions.viewtopic.php?f=3&t=19
Another step is not needed as they learn from their bad experience how to secure their Facebook accounts and about online privacy issues. They also hopefully learn not to add unknown people as friends and taking off their clothes online with them.