How to make your own country

Build it based on basic principles of human nature:

1. People always do what they believe is in their own best interest even if that just being happy by helping others.
2. People will always work toward improving their standard of living and becoming wealthy, which is why socialism doesn't work.
3. Will trade with others that can do other things better than themselves.

To invent new things I do it for charity but others may want to get rich off of it, which is when it may be necessary for the good of the one outweigh the good of the many by letting the inventor get a patent and sole ownership of the invention as an incentive for them to invent in the first place.
Then make a currency that is based on something trustworthy. If you can print as much of it as you want then it requires faith that you have to hope everyone believes in. So instead use something that you know is valuable such as gold or artwork or a limited amount of unique coins to create rarity as value.
Some forms of currency could be:

• gold unique stamped coin currency is the most trustable.
  
• salt
• Stamped game machine coins
  
• Unforgeable ink stamp on paper of limited run of papers
  
• Or trade reprints of pre-comics-code horror comics as currency for all anyone cares.
  

By the way this is a good way around sales tax and the freedom coin and hours worked credits and burning man project are taking advantage of this principle.

Then buy land, or an island with enough land to house and feed the people living in your country.
And maybe pay for taxes with an interest earning fund of the amount needed every year.
To get around taxes just renounce your citizenship and live on a yacht on international waters and go to uninhabited islands for recreation and food. Also to not pay property tax on a house you can build a floating house on the water, even next to land. To not pay luxury tax on a ferrari you can sign the title away to a friend for cheap and then have them give it back to you somehow and you technically don't own it anymore, and won't know you're still driving it. See: part 2 of the unemployment episode of "mission hill".
When buying an island it will have no electricity or buildings or water or sewer and may just be solid rock. But if its only you on the island then you don't need a sewer system. Also with all of the spare time on your hands, building the rest should be easy at working 8 hours a day like at a normal job.
Also the biggest and most productive country has always won all of the wars. But if nobody else is after you then you will have no wars to worry about.