Since my ottoman is a perfect square, it made things really easy. The top measured 33x33 and the sides 17x33. So, I made one cut of fabric for the top at 35x35 and the sides at 24x35. I then laid the top on the ottoman first and secured the sides to the top with some pins.
I love how this brightened up the space just that much more! And how it's completely breaking up the creamy yellow that I hate. Now, eventually, instead of everything being cream, it will probably be all white :) lol