1, Tian Zige, Grid: Needless to say, in the middle, of course. It doesn't stand in the sky, it doesn't stand on the sidelines, it doesn't depend on the left and right lines.
2, horizontal bar: also write in the center of the grid, do not rely on the offline writing (this is the wrong writing that ordinary people usually use. )
3. Vertical line: write from right to left. Pay attention to punctuation, too.
Of course, there are also sector shapes, signature methods, points for attention and so on. There are many more, you can look at other people's works, and there are many online.