Whats up with the him holding his arm out? It's not helping him defend, not helping him attack and not helping him keep his balance, all it would do is make it easier for the enemy to pull him down and stomp him. Most (real life) fighting stances they will hold their arms up, it helps defend their face and torso from punches and makes it easy for them to punch, go ahead and try standing inn you guys position and put a lot of force into a punch without pulling your arm back. The foot placement doesn't make much sense, you wouldn't bend your leg that much, the 90 degree foot placement means when you kick you keep balance and can pivot easily, if your knees bent, as soon as you kick your gonna fall over.
Basically, for your next animation, think about the stance and how it gives you an advantage in a fight.