Practice writing in order, first, you can practice your composition, second, you can arrange the whole layout, and it will help you develop the good habit of writing good line order. If you write casually, when you write formally, although the glyph itself is still well written, the layout of the whole article is definitely not standardized, which is a big deal.
Writing "horizontal" is slightly inclined, with the left side low and the right side high, and its inclination is about 5-7 degrees. Don't go below 5 degrees. Not higher than 7 degrees. This is because people's vision is unbalanced. If the "horizontal" picture is written straight, it seems that the end of the right end has fallen off due to the illusion of both eyes, which is unnatural.