took a while, but finally i made it!
basically, i took the measurements and inserted piping at the sides like in the original one. at the top, on one side there´s a pointed collar like in the version of margarita. maybe i wll add a bow later, not sure though... i used a pretty colourful (at least for me) flower cotton fabric as basic shell fabric and black shiny polyester fabric for pipings, "collar" and lining.
I bought a metre of the flower fabric for 10€ but only used half of it (yay, a new skirt too!), the black fabric was in my stock but wasn´t expensive either.