Group "autopsies" are a good way to promote your key processes. 

Get your people together and explore what went wrong.

This isn't about finger pointing or assigning blame. It's an opportunity to learn. 

It's also a great way to show how much you value the process. 

Common reasons for process failures - 

1. Training - the people don't understand the process 
2. Ability - the people don't have the right skills
3. Will - the people aren't motivated to follow the process