Here are few places on the web - Forex Forums - where users post their trading systems. (Forexopia.com does not endorse any of them) These links are provided as a courtesy.
Note: Every one of us has had atleast one-successful trade. Many of us spend way too much time figuring out BAD trades - when we should spend double the time figuring out GOOD trades - what did I do that made me profit? - what were the settings? - can I replicate the same results?. If you can replicate any of your successful trades 7 times out of 10. You have a trading system. Period. Go. Figure out your good trades. And you will come up with a great trading system.