Very expressive. Lots of imagery. You need to have some life experiences under your belt. If you don't feel it, the audience won't either.
You can play Rubato with Chopin. Just make sure that your Rubato balances out. You've gotta "Rob Peter to pay Paul"
Lots of arm weight, lots of pressure, lots of pedaling.
... advice, get yourself into a relationship, treat the person like garbage, get dumped, then play Chopin... it will be awesome!

haha j/k
Check out Paul Barton's tutorials on Youtube.com regarding Chopin (and Liszt). He's awesome at breaking them down and showing how to apply imagery.
Hope this helps! Good luck.