Great post, @neumannsalva. I wonder whether you could get in touch with Tilly and the Buttons to see if they can suggest how to sort the problem?
You did a great job and should be proud to be wearing a 'me-made-may' skirt ! - oh and you even got chocolate cake !! :D
RE: Beware of the A-Line skirt: making the Delphine skirt from Tilly Walnes