trial and error is the best way, create new techniques and test it out on other styles 

Might want to really learn something before tying to create something.

This guy is sincere , but what is he doing?

https://www.youtube.com/watch?v=meUHz8N8Els

For you to decide.

Karate is Japanese style, Kung Fu is Chinese style, etc. And each style has their own sub-style like Shaolin Kung Fu and Wu Shu Kung Fu, etc. They all didn't  happen just overnight. It took generations to refine their art, kinda like how languages took time. And when you observe from a distal perspective you can see the differences and try to classify it based on your observation. I would suggest studying Martial Arts. Bruce Lee was known to be a feared fighter but he was very engrossed in studying martial arts, he had bookcases filled with books and was a voracious reader. To become great, you must study the greats and then you can become better, and then you can create your own style.

karate is okay but kung fu is better.

If you have to ask, then you don't understand what a style is or what a martial art is either.

First you must learn the difference between training your style as a style and training your style as a martial art. Then you may begin to understand. what a style is.

edit:>

As for the trial and error comment, yes on a battle field the technique either worked or you died, that was the trial and error in martial arts.

Focus on jump punching your own genitalia 

If you do not know, then you are not qualified to create a new style.  A style of martial art is not the result of someone wanting to be different. it does not exist for the sake of being different.