改改我這一段的文法!

People, who have bad habits, need to change and create
a better image. A first impression only happens once, that
may gain respect from others.

People who have a bad habit ( bad habits) want to change and create a better image . It is because the first impression only happens once and gains more respect from others.

一種壞習慣就用 a bad habit ,多種壞習慣就用 bad habits
first impression 是單數,所以要用happens,gains;如: The boy only eats apples and drinks milk.

See below. Hope this helps.

First impression is very important as it only happened once. Also, it helps to gain respect from others. For people who have bad habit, they need to make change to their behavior in order to create a better image for themselves.