Here is how our training sessions currently look like (it has been accelerated to fit in a minute):
As you see, we work on 3 different aspects of the collar: 1) desensitization of the collar around her neck, 2) desensitization of the collar around her ears, and 3) working on keeping the collar for longer period of time around the neck. 2 and 3 are the hardest at the moment, so we are using the highest value treats (stinky cat food!).
We always include an easier exercise in the collar mix, like the remote targeting in this video. This is something we introduced recently to be able to place Skye where we want without using a hand touch. The main goal is to transfer this to our pet sitter (thus the change of person in the training) so she can safely move Skye around.