I discovered this (and promptly pinned it to my Pinterest board)
I found it here. It was supposed to be a Christmas gift for the girls (this is Ladybug's) but I ran out of time and they got more than needed anyways. So Friday I finally got around to making one (and cut out the pieces for Butterbean's). I'm really proud of the way the turned out! See for yourself:
Both girls love it! and it shouldn't take long for the other one to come together, pictures as soon as I can get them to stop jumping on it long enough for a non-blurry picture.