Do you have any more of the stripe material (the one in the bottom pinwheel)? I would use one of your pinks (in your 2nd photo) as border, then a border of the stripe w/the stripe going horizonally, continue adding borders of your pinks, ending with the stripe as your binding. I would not use the yellow dot. Lay it out to see how that looks. The color in your pinwheels is showing as beige or something ... which IMHO contrasts too much with the white panel.
Good luck! The ballerina is so cute.