But with technology.
First, image of flag from Wikipedia:
Put the flag image into Illustrator and made it the real life size I want:
Traced the lines:
Hid the colored image, set printing to page tiles.
I only need sheets 1 and 2 to get started. Now there's NO guesswork about how to line the stars up in a perfect circle or how big to make them.
I really don't know how Betsy Ross did her seams. I don't know how Confederate flags were sewn in real life either! I doubt it was zigzag seams, so I get an F on authenticity, but if I actually get them MADE I will get points from my little guys :-)