I would suggest a pattern called, "The Great Frame Up."
example as shown. Where I have used blue and white frames, I suggest your yellow and blue tone-on-tone fabrics.
Use the larger scale border (left of your photo) as the border, and the other 3 as the prints to be "framed." Like you suggest, one border fabric (right side of your photo) can be fussy cut to give a variety of different looks.