This year, a group of Louisiana State University researchers are trying to make Mardi Gras a little bit greener.

The North American Vexillological Association — it brands itself as the world’s largest club for flag enthusiasts — has settled on five basic rules for good flag design. They even distilled the rules ...

When you know the basics, you can freely create different patterns based on your imagination. I just give how to make for reference, You can do the way you want, And maybe you will do better than me ...