I don't know what pattern you are using for this (I love it, by the way) but a flip-flop quilt is PERFECT for my oldest grand-daughter who only wears something else besides flip flops when she's barrel racing! 8) She even wears them for 'regular' riding! :roll:
anyway, I found a pattern last night online:
http://quickquilts.com/curiss/705_wbff_pattern/[url]
that can be used to make the squares.... (even a bikini pattern :wink: )
and you can make the squares any size you want (as long as it's big enough for a 'pair' of flip-flops) :D