What your doing when you escrow is, the people involved send the items or btc to a neutral 3rd party to confirm that the trade happens so nobody gets scammed. Like in our trade, I would have sent the btc to the escrow and he confirmed that he had it. Then you would have traded me the skins. Then I would have released the btc from the escrow. Meaning I tell him all went well to send you the btc.