This is a very nice project. I'm no expert in the character but looking through your build really presents her. Thank you for that.
The only thing I can think of, apart from the things you've already mentioned, are the bicep wraps. In your most recent reference picture it seems they are wrapped slightly slanted. This, however, might be a case of difference in camera and arm position. I assume the slant might be difficult to recreate in a real life situation. Using elastics wraps might work and also make them as snug as your lower arm wraps. But I'm no textile expert so please feel free to disregard this as uneducated guesswork.
A picture from the same angle as the reference picture (slightly down and to your left) would give a nice view of the costume too.
I really enjoy these original builds on the TFE and yours is a fine example of it.
Keep it up!