The length and detail of the script will vary depending on the style of your comic. A single frame comic may only have a line or two. Regardless, write it out to help you judge how well the story reads.  Write your script as a sequence of frames. Treat each frame as a separate scene to help you manage the flow of the story. Make sure that the dialogue does not dominate the frame. Comics are a visual medium, and so a lot of your action and implied meaning will be coming through in the illustrations. Don’t let the text overpower the images. Don’t worry about accurate sizes, details, or quality. You will be creating storyboard thumbnails. Do this as you write the script. This very rough sketch will help you visualize the flow of the comic.  Focus on how characters will be placed in the frame, where the action is occurring, and how the dialogue will fit in the drawing. Once your thumbnails are drawn, you can try swapping their order or making adjustments to change the impact of the strip. The layout should guide the reader’s eyes naturally through the panels. Always remember that readers will move from left to right, top to bottom, except when reading manga which is read from right to left. Use different sizes and shapes for panels to help guide the reader. Beyond dialogue, text can be used in many different ways. These include:  Thought bubbles for a character’s inner thoughts Narration boxes allow a narrator to set up a scene or describe some aspect of the story. Sound can be displayed through the use of sound effect words. Exclamations can occur outside of regular speech bubbles to add extra impact. In film, you’re never supposed to keep a scene that doesn't matter. The same is true for a comic. If the frame doesn't move the story or the comedy or the conflict forward, then cut it and either replace it with something that does or scrap it. A lot of successful comics break convention when it comes to frames. If you are publishing the comic yourself, feel free to explore as many different framing options as you...

TL;DR in Chinese:
写一个脚本。 勾勒画幅。 请确保版面布局有看头。 尝试以不同方式运用文本。 问问自己是否每帧画图都很要紧。 尝试变化画帧的结构。