OMG! Those are fantastic! Is that a ball and tennis racket, or a bat, on the one on the left we can barely see?? Please post more pictures.
From the 4 that are shown I might guess that each person did a boy and a girl? If so, how about setting the matching boy and girl together on-point, side-by-side or top/bottom, and two setting triangles of the same backgorund fabric and a slim border of a fabric that goes with the theme (if there is one) of each set?