Hi I here's a few tips.Firstly you have to maintain your balance during the fight. How to do this? Take up a wide stance and stay standing. Once you've done this the next step is to throw a punch that doesn't throw you off balance. In order to do this you will have to try a few times if you're a beginner. Footwork is a real thing in toribash. Remember, the key is to have both your feet firmly planted into the ground but nothing else. This is called a horse stance and Mochucha explains it perfectly:

To do a good horse stance, your knees have to be a bit contracted and your glutes a bit extended. You don't need to keep a stance, you can just do it like a transition between two other moves. The horse stance is just a way to keep on feet.