Korra stand about 6" tall and is in scale with the figures from Mattel's Avatar: The Last Airbender toy line from several years back.

Recipe:
Most of this figure was a completely new sculpt but there are some parts form other figures that were heavily modified or sculpted over top of.

Upper torso- Heavily modified DC Universe Classics Donna Troy torso
Shoulders- Heavily modified DC Universe Classics Star Sapphire Wonder Woman shoulders
Arms- Combination of heavily modified Marvel Legends Savage She Hulk and Marvel Girl arms
Hands- Modified Blue Spirit Zuko hands
Feet- Heavily modified Ice Attack Aang feet
Skirt piece- Sculpted from scratch and then cast with SmoothCast 45D which is a semi-flexible resin (same stuff I used on my Katara custom)