It is essential to change your behaviors to support the new practice(s). If people see you using the new method, or asking for the results of the new method, then they know you are serious. If a Vice President plans his or her work using the standard planning process, this sends a strong message about the serious nature of the improvement effort and the validity of the method.
For example, you could:
Use the new risk management process for your work
Inspect your work using the new inspection process.
Use a tailored version of the new requirements of your customers (the developers anad managers)
Collect the desired metrics (or equivalent ones) for yyour own work and show how they are used
In summary, your support must be active and visible. You must help your people stay focused on what is important and make sure everyone (including you) sees the tie between those goals and the new practices. Ask them to use the practices and require them to show you the results. Be sure to use those same techniques for your own work. (Some of our clients refer to this as "eating your own dog food".)