So, somehow I failed to notice I hadn't actually written a Kerrigan post before. To rectify it, here's how I crafted the rest of her! She's about 50% painted so far, and once I'm done focusing on my Prussian fleet I'll finish her.
First, as always, I collected bitz that might be appropriate for the build. She's actually quite a long running idea in my head, and I've had pieces of her in some form or other for over a year now. I was always halted by trying to figure out how I'd do the back blades without them being an eternal nuisance, and on the head. The latter I solved by hacking the head off a Mordheim model that will likely never see the table, and when she does, it'd be in a setting where her having a creepy mask would be more appropriate than a bare head.
Second I did my image collection. When starting any project, I highly recommend scouring the internet for any photographs or illustrations you can find, to give you ideas, and in the case of historical models, to ensure what you want to do 'actually happened'. In this case, I managed to find a blog detailing the construction of the 1:1 model of Kerrigan made for Blizzcon a while back, which was fantastically useful, as it gave me detail I would never imagine being able to put on 28mm, but could now pick and choose. I'd link it here, but I don't recall specifically which blog, and it's pretty easy to google and find.
The arms are heavily modified Eldar biker arms, repositioned at the wrists, cut in at the shoulders, removed of all detail and most of the armour plating, and with extensive (and incredibly careful) finger thinning and separating. Her hands are still overlarge, but I am okay with this both because any more and they'd be too delicate for a play model, and her model design does often have large-ish talon hands.
In the picture above you can see what I eventually decided on for doing her back blades. I figured a couple strands of thin-gauge modelling wire, with liquid greenstuff (LGS) covering it should give me the look I desire, but with an ability to bend that would let me pose them, and resist full-on breaking.