That's a pretty good Trevor. I like 'im.
Besides what dakmanx said there is also a little wierdness with the way the right leg is animated.
Like If you try to do that pose yourself you'll notice that both your knees are at the same relative height through the entire motion.
Right now the left leg bends nicely at the knee, but the right one looks like it's bobbing up and down in a disjointed manner.
Regardless of the angle they are viewed from the top of the boots should maintain their relative heights to each other.
I hope I'm explaining that clearly. If not just take a quick video of yourself mimicking that pose and you'll see what I mean.