Both of these modifications I found in 2 separate tutorials on youtube. Look online and I'm sure you'll find them.

Elodie Young's Elektra from Netflix's Daredevil and Wesley Snipes's Blade.
1.) Changed legs & hips on Blade using the “Marvel Legends Amazing Spiderman 2: Infinite Series Electro” figure. The prior version looked weird and didn’t let the legs move back…. As well as making Wesley’s butt look flat and weird.
I added some paint shading to the skin tone/ musculature and some small, metallic paint highlights to areas on the legs (knees) and down back armor.

2.) I replaced arms on Elektra using the arms from a recent Luke Skywalker figure.
The prior version of Elektra’s arms looked horrible. These new arms have better elbow joints and much better articulation.