You've got a nine patch design. How about making it as a disappearing 9 patch? I'd use the larger print in the corner squares and probably a green in the middle and the blues on the sides. Then you'd have the green as the little squares and the blues as the rectangles. I love the color combination.
Or if you want to use all the fabrics, you'd have a scrappier look that would also be good.
Oops - that's already been suggested - don't know how I missed that!
I wanted to add that if you do the D9P you'd loose a little fabric in the seams, so if you're after a certain size, you might want to add a border, and the "I love Mommy/Daddy" fabric would be perfect.