I'm excited to have found a costume to submit for the 501st, and that costume is Lumiya.
She is an extremely inconsistently drawn character, so I've had to do some piecing together and looking at what is most common. In the end I decided I'll be using the following images as a reference:
Headscarf:
Body piece:
Chest armor:
Cape:
Belt / Gloves / Boots:
Chest piece:
This is a very quick write-up of what I've come up with so far:
Headscarf: dark charcoal grey. In the comics, it's always almost drawn with multiple creases and folds which leads me to believe it is a very lightweight, breathable fabric. Another reason I believe that is because, in my reference image, you can clearly see the outline of her nose.
Body suit: black. Very skin tight. Lumiya trains with Vader and I think her costume mimics his in many ways. Because of this relationship, I believe her body suit to be made of leather or leather-like material. To achieve the design on the body suit, I will be hand painting it with silver circuitry.
Right arm: covered in armor from the elbow up.
Boots: Metallic silver. They come up just above the knee on the inside, and extend on the outside all the way up to her waist.
Gloves: Same material and color as boots. They come up just above the elbow on the inside, and about 1/3 of the way up the bicep on the outside.
Armor: Silver. Goes across chest diagonally from left shoulder to chest level on the right side. She also wears armor beneath her head piece, I haven't written up anything about that yet.
Belt: Silver rectangle in the center. Inward pointing triangles to either side, followed by spaced squares around the remainder of the belt.
Cape: Black. When she is shown with her cape, it is generally very messy, loose, tattered and frayed. I'm thinking of maybe using a chiffon fabric to achieve that effect.