How do art scams work?

Once a week or so I get an email from an artist somewhere on the planet like this about a potential art scammer (see all my listed scammers here):

Hello, I'm a German artist and found your " Art Scam Alert " from July 15  2018 about this Donald Hugh mail. Now at January 21  2022 I got the same mail from him online in German. He ordered two pictures from me. My question is, how he is trying  to rip off artist? He wants me to send pictures and doesn't pay? 

Thank you for an answer. 

This is how:

1. They will most likely give you (a) International Bank Draft/Postal Money Order or (b) Credit Card
2. Your bank will accept them and they will show almost immediately as available in your account, which is the "normal" way to show that the deposit has cleared.
3. Artists then usually ship the work
4. A few days later the bank gets a note from that overseas bank... bad news - the draft is fake and/or cc has just been reported as stolen.
5. They withdraw the funds from your account.
6. You're hosed.