plain white T-shirt one size larger than you normally wear (Unless you like them really tight)
pair of scissors
Red and Blue Spray Paint
(It doesn't have to be these actual brands or tints or red and blue. Just make sure you can use it on Fabrics.)
Painters tape or any other type of tape (for the stripes and to use for back side of Stars)
For the stars i just used clip art or you can google stars to find your favorite.
Print and cut out. (I used about 12 Stars for my T-shirt)
Arrange Stars how you like them
Turn stars over and roll up tape to place on back
I used paper to put on the inside of the shirt so it doesn't soak through.
Also used paper to cover up the parts i didn't want the other paint on.
I hand washed it the next morning only because I was worried I would get paint on other clothes.
Once you have washed it
Here is a good video I found on how to cut your T-shirt: