umm sorry im a bit new I got a new westie pup.. What I read on the forums is that you have the crate next to your bed so he/she can see you (Ted needs the night light or he gets really scared) and just slowly move he/she away from you each night to build his separation confidence. But then I have been tiring out Ted and his been very sleepy when I put him in the crate.
We have had our pup Ted since Sunday night and his been well behaved.