Hi Jess, Here's the block I made for you. It was fun to play around with. I started with the idea of being very simple...just three bars, one being a little shorter. However, once I had them done and put them on the mat to see how much white needed to go around, I saw that I needed one more bar and then I decided to break it and make it taller than the others..more and more seams eating up your white fabric.
So, ultimately, I ran out of white!
I put paper in that top photo so you could get a sense of how I was composing the block. I'm going to send this as is, since I know you can handle attaching two swathes of white. : )