My manga storyboard, I use this layout. It is easy and fun to use. I using two pages at a time, since it is much better. For the fact that the design is better for comic format. It will look good and more professional if you know how to organize the contrast between the two set of pages neatly. I will tell that more in a tutorial I plan to make soon.
As they say in Japan: Matane! (See you later!)
Japanese Version (これを日本人バージョン): [link]