Go here to see the sword and wig! To see the rest of my fabulous photoshoot with EleventhPhotograph, go here!
This was actually the piece I started first (because it goes under a lot of things, and has a lot of detailing), but I finished it only about 1 day before the convention, the details being some of the last to be completed.
The main over layer of the skirt is a full circle skirt with a slice missing out of the front. The pattern was easy enough. First I determined the radius of a 30" circle (the waist height I wanted the skirt to sit at). I wanted the space at the front to be 6" wide, so I subtracted the 6" from 30", leaving me with 24". I divided the 24" into 4 equal panels. Using the radius (string taped to a point, tied to a pencil) I drew an arc that was 8" long. Keeping the tape at the same spot I added the desired skirt length to my radius and drew a second arc below the first. By using the string pulled tight, I marked the side seams based on where the string intersected with the ends of the 8" arc. This gave me the pattern piece pictured above. I then patterned the under pieces to the skirt, and drew a mockup of the emblem shape to determine sizing.
Then I cut out my pieces. Any of the edges that were to have bias tape added were not given seam allowance. For the 4 skirt panels 2 of them were given an extra rectangle of fabric in the seam allowance at the top left and right respectively. The extra fabric would go in the back seam and become the overlap for the skirt closure.
I used a 1/2" (double-fold) yellow bias tape for the overskirt and a 1/4" bias tape (double-fold) for the edge detailing on the rest of the pieces.
I finished the side edges on the 2 sloped under panels. The edge furthest from the opening was simply rolled over and stitched, the other edges that were actually visible were finished with a bias tape.
I added my bias tape to my under pieces, being careful at the corners (the most difficult part of bias tape).
The main parts of the panels were now done. They looked great laid out together.
This may sound strange, but I actually find it easier to sew on bias tape without pinning it in place. I stop frequently to ensure my edge is properly aligned, and I come to a full stop every time I reach a corner, but otherwise I find it easiest to do it this way.
I began work on the under most layer of the skirt, the sheer layer. This piece didn't actually make it to be a part of the final costume, as after I finished it I felt it detracted from the costume more than it added. It was made to be slightly shorter than the over skirt, with 5 thinner panels forming a full circle. The overskirt pattern was used to make these.
The first thing I did for the emblem was to put in the black background and border. I carefully measured and marked out the exact placement of the corners so that it wouldn't be crooked. I first placed down the black piece (same black fabric as my bodice), and then top stitched the bias tape around.
You can see how they looked together below.
I made a foldover waistband. Carefully pinning the pieces in place where I wanted them, I stitched the panels to the waistband, then folded it over and ditch stitched it in place.
I made my triangle strips and stitched them right sides together.
Meanwhile, Alli made the underskirt attach via buttons and loops on the inside. I'm regretful that it didn't make it to be part of the final costume, but such is life. My biggest problem with the piece is that it wasn't see-through enough, and it really obstructed the armour on the legs, which was much more important design wise.
The last part was to attach the triangle trim to the inside of the overskirt. The unfinished edges of the trime were first tucked inside the trim and stitched in place. Then the edge of the trim was aligned with the to line of stitching on the bias tape (with a little overlap). Using yellow top thread and a red bobbin I re-stitched over the bias tape stitch line, attaching the trim in a way that was virtually invisible from the outside.

This is probably my favourite of all of Asuna's costumes. It's a shame that this story arc never made it to the anime. Asuna may not be my favourite character, but man does she have some great outfits!