The gray fabric has zombies on it and I like the contrast with the white. I kept a pattern and a solid for the pinwheels as well, and think there's good contrast there too.
Honestly, this took about 3 minutes to do. It's not tricky and it's not time-consuming. Maybe this design isn't your cup of tea, but maybe it makes you want to do better. You probably can.
If you follow this link, you can sign up too, and maybe I'll get some free fabric one day: