ID Card falling

Hi everyone.. while I've been off the cg for a bit working on different opening credit ideas, I've come back to one of the last cg effects that's needed. A shot looking down from the elevator as Chris drops his ID badge down the shaft. Here's the first pass at it (minus the foreground image of Chris' hand on the elevator railing). It isn't too pretty, but can only get better.. It's pretty tough to create these fully cg shots since there's no real part of the image that can help sell the illusion.