The contest rules can be found here,
The collection of entries can be found here.
With the entries now submitted, it is up to the Flag Redesign Committee comprised of HIM William I von Hartmann-Peters, HIM Alyssa von Hartmann-Peters, Rev. Joseph Marx, and Ms. Krista Marx; to select the top ten flags, which will then be sent to a referendum where the people will vote on an absolute favorite.
This favorite will then have an amendment drafted around it to be submitted for the Constitution of the North American Confederation.