maybe something like this:
using either the black or the green for the hip bump things and the shoulder poofs? and maybe dying the dress a different color if you don't like the look of the white. you can maybe do the sleeves like this:
or you can do the green dress over the white dress like this:
with maybe some added gold trim.
i'm not sure if the green would be long enough, but maybe you could split the white dress and put the green in the split like this:
hope i helped!