<insert british anti-Americanism comment here>
Don't worry, I've begun to consider doing an equally sized Union Jack.
I just need this math problem solved:
What dimensions would a 1:2 flag need to match the area of a 1,000×1,900 flag?
Other than that, I just need a source of stats comparable to that usflag.org site.
I already know that the two flags bear the same colors.
UPDATE: I have successfully done the problem (the answer is 100×the square root of 95 by 200×the square root of 95), and have begun constructing the Union Jack!