No sorry but this can´t be used for the Darth Traya - as to the CRL :
Hooded Robe For 501st approval:
The floor length, loose fitting robe is made of a matte black fabric.
The fabric is gathered at the shoulders to create a pleated look that runs down the front all the way from the shoulders to the floor.
The front of the robe is open from the shoulders to the belt, creating a "V" shaped opening.
From the belt down, the robe is closed in front.
The back of the robe is somewhat gathered, but it does not have the same pleating as the front.
The hood is attached to the robe, and has a pointed tip. When worn up, the hood falls directly over the bridge of the costumer's nose.
I´m looking forward to seeing your WIP and follow your progress