Hi!
I've just done a simple for the final prototype of the project I'm currently working at (
http://namainstrument.tumblr.com), and I really need that someone more experienced had just a look at it to see if I didn't miss anything...
Actually, this whole circuit was already tested (and worked!). However, I was using Bluetooth instead of Xbee. I'm more concerned about the whole wiring of Xbee than everything else.
One thing someone pointed me: would the wiring of sensor's GROUND all together "outside" of Arduino be a problem? (on my tests, it all seemed to be OK... but I'm just checking!).
Pics:
Overall textile (outside):

Overall textile (displacing objects):

Circuit:

Circuit (detail of Lilypad wiring):

More information can be found at the tumblr above!
Thanks a lot, as always!
Best regards.