We have just launched a new FX Challenge forum at od. The first challenge is to build a house (ok a castle, ship or bridge) out of cards. Should be an interesting challenge and plays nicely up to Houdini's strengths.
Take a look : http://forums.odforce.net/index.php?showforum=53 [forums.odforce.net].
We encourage all levels of artists to take part. There's really no better way to learn than to push yourself to do something challenging and get helpful advice along the way.
Thanks
Marc