A full page is 21 inches long by 10.87 inches wide, therefore a quarter page is 10.5 inches deep and 5.435 inches wide.
The ad needs to be a stopper i.e. it must stop people dead in their tracks! Use an image, photo or illustration that works with the copy to attain the desired effect. If you win, you get bragging rights--your design ran in the national print edition of the Wall Street Journal! Get more details about the company here: http://www.repux.io.
IMPORTANT: You must submit a complete ad, not just a stock photo or illustration. The attachment contains the ad copy. The PDF provided is just for the ad copy and is not the actual size. See the size details above.
Now use your design instincts to make it world class!