There is no proven technique to win an auction.
I'd say it's all about timing and when to join an auction. How many bidders are taking part and so forth. I'd recommend you watch a couple of auctions first just to have a look how it goes then try out the first win auctions if you have never won a auction before or the junior auctions if you have won less than nine auctions. Just make sure you have enough Tcredits before joining in on an auction.
All the best of luck to you.
