Well, when i wrote out my manga storyline, i used script. I didnt feel like using paper, so i used the notebook on my computer. whenever i get an awesome idea, i dont hesitate to type it down, eventually, the many little ideas i get kinda fit together, and thats when i come up with a good storyline.
I usually follow these basic guidelines when making a story or manga:
File:Freytags pyramid.svg - Wikipedia, the free encyclopedia Also, I keep the time of occurence and setting in mind, for example, if the manga storys setting is feudal-era japan, id make the characters wear old fashioned kimonos, use time appropriate weapons, language, and so on. with the characters, youd have to come up with that on your own, whatever looks good to you. When it comes to personality, itd be sure to take notes on how you want them to act, and make them talk a certain way, do things differently the way you want them to, etc. Thats giving life to the characters you put on the page, which is a good element in many well-known manga. Now with conflicts ans such, itd be sure to make it in depth, but not too technical, we want to reel the reader in, not confuse the hell out of them. Anyway, thats all i can really think of, i hope my information can be useful somehow. Good luck on your manga!