I tried to play a new song on my left-handed guitar. I had some troubles doing that JJ Rhythm were I used to be so fond of. It was time to take a good look at my right-playing technique.
To break it down, it's just like palm muting. So if you can't palm mute yet; learn that first. Second, just slap across the strings. It's like a karate-jab. Hit all the strings simultaneously with your pick and your palm. That`s the trick! Now all you need to do is practice. It's what I'm gonna do too. So prepare for a left handed rhythmic guitar play soon.