Parrying is not just about defense; it's about offense. It's about being so good at not getting hit, you end up hitting your opponent instead. And when you do, they'll be the one wondering what's happening.
Here's the basic parry:
Practice these, and you'll be a parrying master in no time. Just don't say I didn't warn you.
Disclaimer: Do not attempt to use parrying techniques in real life. Or do. We won't judge you.