Dress from Pirates of the Caribbean

I'm working on recreating one of Elizabeth's dresses from Pirates of the Caribbean. I have the bodice and sleeves drafted out, which is the most difficult and time-consuming. I have the fabric; not the same as the movie, though. I'm using purple brocade taffeta and purple shot taffeta for the underskirt and sleeve linings. The bodice will be boned, and the back will lace up. Here's a couple of pictures of how I hope it will look! Price will be in the $600 range.