Well, the game doesn't have a feature that does that automatically, you'll have to either:
1. Trust some one to hold your stuff as you transfer it. (not recommended)
2. Double client, and express/trade the items to yourself. (If your computer can handle it, this is recommended. Please note you cannot trade items between characters on the same account, only characters on different accounts)
Guy 1: "Hey, see that car?"
Guy 2: "What car?"
-screeeech-
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ign = Kazura
Server = Cancer 2
Element = Fire