[UPDATE 9/1/14] My costume is nearly complete. Complete enough for Dragon Con '14. Here's me with fellow master Assassin Fevereon, who made the belt buckle and pauldron and gave me countless tips on this outfit.
Let's start off with a reference photo.
Here is what I have so far. I forgot to take a picture of the front leg flaps, but I'll post those soon.
The outfit is made out of snow white leather. The leg flaps are red suede leather.
I used contact cement to glue the leather strips on these leg flaps.
The only thing I need to do for the sleeves is to sew on binding and ruffles, the latter of which I will probably use linen or cotton for.