The dimensions are at http://www.netstate.com/states/symb/flags/tx_flag.htm

G’day KellyJo101,

Thanks for the question.

The flag of Texas is defined by law as follows:

The state flag consists of a rectangle with a width to length ratio of two to three containing: (1) a blue vertical stripe one-third the entire length of the flag wide, and two equal horizontal stripes, the upper stripe white, the lower red, each two-thirds the entire length of the flag long; and (2) a white, regular five-pointed star in the center of the blue stripe, oriented so that one point faces upward, and of such a size that the diameter of a circle passing through the five points of the star is equal to three-fourths the width of the blue stripe. The red and blue of the state flag are the same colors used in the United States flag.

I have attached some sources for your reference.

You might want to post pictures of the barn when you’re finished so we can see how good a job you’ve done.

Regards

There is no barn in the world big enough to paint the Texas State Flag on. Forget the whole idea.