Help with Bartwists

[colt]

I learned them yesterday, but today whenever I do them I always smack the crap out of my thigh lol.
And my thumb is like tore up really bad.
Do they look okay in the video?

http://www.youtube.com/watch?v=571acAvWfc4

 

[Nick Griffin <3]

i have my hand on the end of my grip like im finna barspin, and my feet as close in the back is i can, and jump higher.

 

[Micah.]

nice caterpillar