Emma Presents Katara Pounding!

This isn't a commission, I just love this show. I may do a slightly dirtier version later, but this is a simple loop.
Toph has decided to show Katara how to get a good pounding, Earth Bending style!!

If I have time, maybe Katara will show Toph a thing or two as well....

*Edit* Gave her a bit more of a reaction in her face. It hurts, after all....