Final answer:
You can make a positive impact on command policies by using email communication to share your opinions and suggestions, as well as by leading by example.
Step-by-step explanation:
In order to make a positive impact on command policies, you can use email communication to share your opinions and suggestions with relevant individuals or groups. Additionally, leading by example is an effective way to influence others and encourage them to follow suit. However, daily horoscope readings and carrier pigeon messaging are not relevant or practical methods for impacting command policies.