A general order format that I use usually goes like this:
Title: Orders/NES name/nation and player name
Stats
Trade agreements, Peace talks, etc... all diplo related issues and other issues concerning other nations not yours.
Domestic orders: Put spending, construction projects, and all things related to internal national issues.
Military orders: Include marching orders, defense locations, building of forts, reinforcements and general defense plans.
Always a good idea to keep Offensive and defensive plans separate and easy to distinguish for the Mod so he doesn't confuse one for the other. Also surprise attacks, or invasions that are important for you and wish to see enacted exactly according to plan should be bold and made so the Mod knows the importance of this plan and so he/she can do his/her best to follow your plan.
Then miscellenious stuff here, leader events (I.E President tours country... etc), birth of a child if it is an NES that does not follow a set line IRL (in real life). And so on...