Welcome to Gaia! ::

I was Riku to Oni-con recently. I used fleece for my vest, as it was relatively easy to work with, and it didnt need hemming to keep the edges from fraying. (That and it made me ubersoft and huggable.)

Your Sora...I had a friend make her sister's Sora costume, but from looking at it, it seems logical to work in layers. Start with the shirt. You need a sleeveless or short-sleeve blue shirt, then sew on the pockets. Layer one finished.

The jacket, you could get a black shirt, cut down the middle, add the edging, and sew on a hood. As for the shoulder armor, youre on your own. I'm not even gonna touch that one.

First layer of the pants, all you need are denim shorts. Or dark blue shorts. The darker blue the better. If all else fails, you can pull out my good friend the dye bucket.

the black layer, uhhh...don't quote me on this. it's just an idea that popped into my head. make a pair of oversized black capris. Cut out what you don't need. Hem it, add the trim, and sew that layer onto the shorts.

for the straps and bags,believe it or not, attatched to nothing on the pants, they stayed on quite well. you could make those easily with fabric strips, the pouches, and D-rings.

hope this helps!