I tried to look up that skin you mention....Even our games are staring to cosplay. lol
If you get to the costume store early enough that pop up for Halloween you can find chain saw (they actual sell out quickly)! Juliet however has heat cutout which would be hard to do on plastic.
Liliana I tired to put the head back on but it was a no go haha... also... never mind spoilers.
I've cosplayed a beheaded girl and beheading Queen. lol