轮廓。 画一条线。 您有了一条线。 设置为画笔或铅笔  您现在应该有这个。 删除草图。 对其余所有的线条重复这样做。 清理。 您有这样的。 看这些线条。 用擦图工具来擦除线的边缘来描尖线端。 描尖其他线。 添加颜色。

Given the above summary, write a detailed text in English for it.
Now that you have your sketch you need to outline it to make it neater. Create a new layer. Click the pen tool, and click "freeform pen tool" Since the pen tool smooths your line, you may need to erase and redraw it. (not the whole thing only the line, don't worry) Now you need to stroke it. Right click and click "Stroke Path" and then   Delete the old line by doing this. Right click and select delete path. Here we see this: You don't want the yucky blue lines right? You do this:  Some are thick and misshapen what we need to do is taper.   Now it is time to add color.